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Champion
Champion IridiumChampion 9204 Spark Plug
| Brand | Champion 9204 |
|---|---|
| Center Electrode Diameter (Inch) | 0.103 |
| Center Electrode Tip Material | Iridium |
| Classification | Champion Iridium |
| Electrical Terminal Type | Non-Removable Nut |
| Gap Style | J Gap |
| Ground Electrode Core Material | Platinum |
| Ground Electrode Material | Platinum Pad Surface |
| Ground Electrode Quantity | 1 |
| Ground Electrode Tip Design | J Gap |
| Hex Size | 0.625 |
| Hex Size | 15.880 |
| Hex Type | Hex |
| Installed Height (Inch) | 2.05 |
| Insulator Height | 0.06 |
| Insulator Projection (Inch) | 0.06 |
| Manufacturer Heat Range | 12 |
| Plug Type | RS12WYPB4 |
| Pre-Gap Size | 0.045 |
| Pre-Gap Size | 1.15 |
| Reach | 0.689 |
| Resistor Type | Yes |
| Seat Type | Tapered |
| Taper Diameter (Inch) | 0.27 |
| Thread Diameter | 0.551 |
| Thread Diameter | 14.000 |
| Product line | Champion Iridium |
| Fits | Ford, VPG, Buick, Cadillac, Lincoln, Mazda, Mercury, Morgan, Pontiac, Aston Martin, Oldsmobile, Qvale, Laforza, Panoz, Audi, Chevrolet, Mercedes-Benz, and Merkur · 637 vehicles |
Iridium center electrode. Fine-wire design sharpens spark focus for stronger performance.
Platinum ground electrode. Helps deliver consistent ignition performance.
Champion Iridium. A premium spark plug line built around advanced electrode materials.
Cross-references Autolite XP104, DENSO Auto Parts 4505 and DENSO Auto Parts 6044 for the same application. See all 16.
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Champion Iridium Spark Plug 9204
Champion Iridium 9204 is a tapered-seat spark plug built for precise ignition performance in a wide range of Ford, Mazda, Mercury, Lincoln, Cadillac, and other applications. Its fine-wire iridium center electrode and platinum ground electrode help concentrate the spark for consistent combustion response.
The Champion Iridium line focuses on stable ignition characteristics and durable electrode materials for drivers who want a direct replacement spark plug with OE-style fitment details. Part number 9204 is listed for many vehicles, including Ford F-150, Ford Ranger, and Mazda Tribute applications.
Key Features
- Fine-wire iridium center electrode for sharp spark focus
- Platinum ground electrode core with platinum pad surface
- Pre-gapped at 0.045 in. / 1.15 mm
- Resistor spark plug design
- Tapered seat construction
- 14 mm thread diameter with 0.689 in. reach
- Non-removable nut terminal and 5/8 in. hex size
- Champion Iridium classification for secondary ignition service
Product Details
Champion Iridium 9204 uses an iridium center electrode and platinum ground electrode materials to support a focused spark event and reliable ignition performance. The J-gap design, tapered seat, and resistor construction make it a practical replacement choice for vehicles that specify the RS12WYPB4 plug type. This part cross-references Autolite XP104 and DENSO Auto Parts 4505 for the same application.
Common fitment includes 2001-2005 Ford Ranger, 1997-2010 Ford F-150, 2001-2006 Ford Escape, 2001-2005 Mazda B3000, and 2001-2006 Mazda Tribute applications. It also appears in coverage for Ford Fusion, Mercury Mariner, Lincoln Town Car, and Cadillac DTS models across the listed years.
What This Spark Plug Helps Address
- Hard starting caused by worn ignition electrodes
- Rough idle from inconsistent spark delivery
- Misfire conditions tied to aged plugs
- Reduced throttle response from degraded secondary ignition performance
- Maintenance replacement for vehicles calling for RS12WYPB4-style plugs
Installation Notes and Tips
Verify the vehicle’s required plug type, gap specification, and seat style before installation. This plug is pre-gapped, but final gap should always be checked against the engine’s service specification, since listed fitments include different gap requirements by application. Use the correct torque procedure for tapered-seat spark plugs and confirm the terminal style matches the ignition lead or coil-on-plug connection.
Fitment examples include 2010-2013 Ford E-150, 2009-2012 Ford Escape, 2006-2011 Buick Lucerne, 2007-2010 Cadillac STS, and 1997-2004 Ford Mustang. Additional coverage extends across many Ford, Mazda, Mercury, Lincoln, Cadillac, Pontiac, Oldsmobile, Mercedes-Benz, and Aston Martin models listed in the fitment data.
Quality Assurance
Champion manufactures this spark plug as part of its Iridium line, using fine-wire iridium and platinum electrode materials for consistent ignition service. Part number 9204 is cataloged against extensive OE-style fitment data to support accurate replacement selection.
This part fits 637 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2013 | Ford | E-150 | 4.6L | V8 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2013 | Ford | E-250 | 4.6L | V8 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2012 | Ford | E-150 | 4.6L | V8 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2012 | Ford | E-250 | 4.6L | V8 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2012 | Ford | Escape | 3.0L | V6 | — | N/A | Gap 0.048 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2012 | Ford | Fusion | 3.0L | V6 | — | N/A | Gap 0.048 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2011 | Buick | Lucerne | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2011 | Cadillac | DTS | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2011 | Ford | Crown Victoria | 4.6L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2011 | Ford | E-150 | 4.6L | V8 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2011 | Ford | E-250 | 4.6L | V8 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2011 | Ford | Escape | 3.0L | V6 | — | N/A | Gap 0.048 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2011 | Ford | Fusion | 3.0L | V6 | — | N/A | Gap 0.048 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2011 | Ford | Ranger | 2.3L | L4 | — | N/A | Gap 0.051 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2011 | Lincoln | Town Car | 4.6L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2011 | Mazda | Tribute | 3.0L | V6 | — | N/A | Gap 0.047 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2011 | Mercury | Grand Marquis | 4.6L | V8 | — | N/A | Gap 0.054 (in); Gas Models; Plug Type Number RS12WYPB4; Champion Iridium |
| 2011 | Mercury | Mariner | 3.0L | V6 | — | N/A | Gap 0.048 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2011 | Mercury | Milan | 3.0L | V6 | — | N/A | Gap 0.048 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2010 | Buick | Lucerne | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2010 | Cadillac | DTS | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2010 | Cadillac | STS | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2010 | Ford | Crown Victoria | 4.6L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2010 | Ford | E-150 | 4.6L | V8 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2010 | Ford | E-250 | 4.6L | V8 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2010 | Ford | Escape | 3.0L | V6 | — | N/A | Gap 0.048 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2010 | Ford | F-150 | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2010 | Ford | Fusion | 3.0L | V6 | — | N/A | Gap 0.048 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2010 | Ford | Ranger | 2.3L | L4 | — | N/A | Gap 0.051 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2010 | Lincoln | Town Car | 4.6L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2010 | Mazda | B2300 | 2.3L | L4 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2010 | Mazda | Tribute | 3.0L | V6 | — | N/A | Gap 0.047 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2010 | Mercury | Grand Marquis | 4.6L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2010 | Mercury | Mariner | 3.0L | V6 | — | N/A | Gap 0.048 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2010 | Mercury | Milan | 3.0L | V6 | — | N/A | Gap 0.048 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2009 | Buick | Lucerne | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2009 | Cadillac | DTS | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2009 | Cadillac | SRX | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2009 | Cadillac | STS | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2009 | Cadillac | XLR | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2009 | Ford | Crown Victoria | 4.6L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2009 | Ford | E-150 | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2009 | Ford | Escape | 3.0L | V6 | — | N/A | Gap 0.048 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2009 | Ford | F-150 | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2009 | Ford | Fusion | 3.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2009 | Ford | Ranger | 2.3L | L4 | — | N/A | Gap 0.051 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2009 | Lincoln | Town Car | 4.6L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2009 | Mazda | B2300 | 2.3L | L4 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2009 | Mazda | Tribute | 3.0L | V6 | — | N/A | Gap 0.047 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2009 | Mercury | Grand Marquis | 4.6L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2009 | Mercury | Mariner | 3.0L | V6 | — | N/A | Gap 0.048 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2009 | Mercury | Milan | 3.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2008 | Buick | Lucerne | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2008 | Cadillac | DTS | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2008 | Cadillac | SRX | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2008 | Cadillac | STS | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2008 | Cadillac | XLR | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2008 | Ford | Crown Victoria | 4.6L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2008 | Ford | E-150 | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2008 | Ford | Escape | 2.3L | L4 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2008 | Ford | Escape | 3.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2008 | Ford | F-150 | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2008 | Ford | Fusion | 3.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2008 | Ford | Ranger | 2.3L | L4 | — | N/A | Gap 0.051 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2008 | Ford | Ranger | 3.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2008 | Lincoln | Town Car | 4.6L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2008 | Mazda | 6 | 3.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2008 | Mazda | B2300 | 2.3L | L4 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2008 | Mazda | B3000 | 3.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2008 | Mazda | Tribute | 3.0L | V6 | — | N/A | Gap 0.052 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2008 | Mazda | Tribute | 2.3L | L4 | — | N/A | OE Type; Gap 0.050 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2008 | Mercury | Grand Marquis | 4.6L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2008 | Mercury | Mariner | 3.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2008 | Mercury | Mariner | 2.3L | L4 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2008 | Mercury | Milan | 3.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2007 | Buick | Lucerne | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2007 | Cadillac | DTS | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2007 | Cadillac | SRX | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2007 | Cadillac | STS | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2007 | Cadillac | XLR | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2007 | Ford | Crown Victoria | 4.6L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2007 | Ford | E-150 | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2007 | Ford | Escape | 2.3L | L4 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2007 | Ford | Escape | 3.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2007 | Ford | F-150 | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2007 | Ford | Five Hundred | 3.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2007 | Ford | Focus | 2.3L | L4 | — | N/A | Gap 0.051 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2007 | Ford | Fusion | 3.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2007 | Ford | Ranger | 2.3L | L4 | — | N/A | Gap 0.051 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2007 | Ford | Ranger | 3.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2007 | Ford | Taurus | 3.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2007 | Lincoln | Town Car | 4.6L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2007 | Mazda | 5 | 2.3L | L4 | — | N/A | Gap 0.052 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2007 | Mazda | 6 | 3.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2007 | Mazda | B2300 | 2.3L | L4 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2007 | Mazda | B3000 | 3.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2007 | Mercury | Grand Marquis | 4.6L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2007 | Mercury | Mariner | 3.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2007 | Mercury | Mariner | 2.3L | L4 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2007 | Mercury | Milan | 3.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2007 | Mercury | Montego | 3.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2006 | Buick | Lucerne | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2006 | Cadillac | DTS | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2006 | Cadillac | SRX | 4.6L | V8 | — | N/A | Gap 0.040 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2006 | Cadillac | STS | 4.6L | V8 | — | N/A | Gap 0.040 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2006 | Cadillac | XLR | 4.6L | V8 | — | N/A | Gap 0.040 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2006 | Ford | Crown Victoria | 4.6L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2006 | Ford | E-150 | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2006 | Ford | Escape | 3.0L | V6 | — | N/A | OE Type; Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2006 | Ford | Escape | 2.3L | L4 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2006 | Ford | F-150 | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2006 | Ford | Five Hundred | 3.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2006 | Ford | Focus | 2.3L | L4 | — | N/A | Gap 0.051 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2006 | Ford | Fusion | 3.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2006 | Ford | Ranger | 2.3L | L4 | — | N/A | Gap 0.051 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2006 | Ford | Ranger | 3.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2006 | Ford | Taurus | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2006 | Lincoln | Town Car | 4.6L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2006 | Lincoln | Zephyr | 3.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2006 | Mazda | 5 | 2.3L | L4 | — | N/A | OE Type; Gap 0.052 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2006 | Mazda | 6 | 3.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2006 | Mazda | B2300 | 2.3L | L4 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2006 | Mazda | B3000 | 3.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2006 | Mazda | MPV | 3.0L | V6 | — | N/A | OE Type; Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2006 | Mazda | Tribute | 3.0L | V6 | — | N/A | Gap 0.052 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2006 | Mazda | Tribute | 2.3L | L4 | — | N/A | OE Type; Gap 0.050 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2006 | Mercury | Grand Marquis | 4.6L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2006 | Mercury | Mariner | 3.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2006 | Mercury | Mariner | 2.3L | L4 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2006 | Mercury | Milan | 3.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2006 | Mercury | Montego | 3.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2005 | Cadillac | DeVille | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2005 | Cadillac | SRX | 4.6L | V8 | — | N/A | Gap 0.040 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2005 | Cadillac | STS | 4.6L | V8 | — | N/A | Gap 0.040 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2005 | Cadillac | XLR | 4.6L | V8 | — | N/A | Gap 0.040 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2005 | Ford | Crown Victoria | 4.6L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2005 | Ford | E-150 | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2005 | Ford | E-150 Club Wagon | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2005 | Ford | Escape | 3.0L | V6 | — | N/A | OE Type; Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2005 | Ford | Escape | 2.3L | L4 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2005 | Ford | Explorer | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2005 | Ford | F-150 | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2005 | Ford | Five Hundred | 3.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2005 | Ford | Focus | 2.3L | L4 | — | N/A | Gap 0.051 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2005 | Ford | Focus | 2.0L | L4 | — | N/A | Gap 0.051 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2005 | Ford | Ranger | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2005 | Ford | Ranger | 2.3L | L4 | — | N/A | Gap 0.051 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2005 | Ford | Taurus | 3.0L | V6 | GAS | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2005 | Ford | Taurus | 3.0L | V6 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2005 | Lincoln | Aviator | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2005 | Lincoln | LS | 3.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2005 | Lincoln | Town Car | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2005 | Mazda | 6 | 3.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2005 | Mazda | 6 | 2.3L | L4 | — | N/A | Gap 0.052 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2005 | Mazda | B2300 | 2.3L | L4 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2005 | Mazda | B3000 | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2005 | Mazda | MPV | 3.0L | V6 | — | N/A | OE Type; Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2005 | Mazda | Tribute | 3.0L | V6 | — | N/A | Gap 0.052 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2005 | Mazda | Tribute | 2.3L | L4 | — | N/A | OE Type; Gap 0.050 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2005 | Mercury | Grand Marquis | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2005 | Mercury | Mariner | 3.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2005 | Mercury | Mariner | 2.3L | L4 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2005 | Mercury | Montego | 3.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2005 | Mercury | Mountaineer | 4.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2005 | Mercury | Mountaineer | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2005 | Mercury | Sable | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2005 | Pontiac | Bonneville | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2004 | Aston Martin | DB7 | 6.0L | V12 | — | N/A | Gap 0.040 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2004 | Cadillac | DeVille | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2004 | Cadillac | Seville | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2004 | Cadillac | SRX | 4.6L | V8 | — | N/A | Gap 0.040 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2004 | Cadillac | XLR | 4.6L | V8 | — | N/A | Gap 0.040 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2004 | Ford | Crown Victoria | 4.6L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2004 | Ford | E-150 | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2004 | Ford | E-150 Club Wagon | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2004 | Ford | Escape | 3.0L | V6 | — | N/A | OE Type; Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2004 | Ford | Expedition | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2004 | Ford | Expedition | 5.4L | V8 | — | N/A | OE Type; Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2004 | Ford | Explorer | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2004 | Ford | F-150 | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2004 | Ford | F-150 Heritage | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2004 | Ford | F-150 Heritage | 5.4L | V8 | CNG | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2004 | Ford | F-250 Super Duty | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2004 | Ford | Focus | 2.3L | L4 | — | N/A | Gap 0.051 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2004 | Ford | Mustang | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2004 | Ford | Ranger | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2004 | Ford | Ranger | 2.3L | L4 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2004 | Ford | Taurus | 3.0L | V6 | GAS | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2004 | Ford | Taurus | 3.0L | V6 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2004 | Lincoln | Aviator | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2004 | Lincoln | LS | 3.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2004 | Lincoln | Navigator | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2004 | Lincoln | Town Car | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2004 | Mazda | 6 | 3.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2004 | Mazda | 6 | 2.3L | L4 | — | N/A | Gap 0.052 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2004 | Mazda | B2300 | 2.3L | L4 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2004 | Mazda | B3000 | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2004 | Mazda | MPV | 3.0L | V6 | — | N/A | OE Type; Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2004 | Mazda | Tribute | 3.0L | V6 | — | N/A | Gap 0.052 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2004 | Mercury | Grand Marquis | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2004 | Mercury | Marauder | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2004 | Mercury | Mountaineer | 4.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2004 | Mercury | Mountaineer | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2004 | Mercury | Sable | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2004 | Pontiac | Bonneville | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2003 | Aston Martin | DB7 | 6.0L | V12 | — | N/A | Gap 0.052 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2003 | Cadillac | DeVille | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2003 | Cadillac | Seville | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2003 | Ford | Crown Victoria | 4.6L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2003 | Ford | E-150 | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2003 | Ford | E-150 Club Wagon | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2003 | Ford | Escape | 3.0L | V6 | — | N/A | OE Type; Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2003 | Ford | Expedition | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2003 | Ford | Expedition | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2003 | Ford | Explorer | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2003 | Ford | F-150 | 5.4L | V8 | CNG | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2003 | Ford | F-150 | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2003 | Ford | F-250 Super Duty | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2003 | Ford | Focus | 2.3L | L4 | — | N/A | Gap 0.051 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2003 | Ford | Mustang | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2003 | Ford | Ranger | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2003 | Ford | Ranger | 2.3L | L4 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2003 | Ford | Taurus | 3.0L | V6 | GAS | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2003 | Ford | Taurus | 3.0L | V6 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2003 | Lincoln | Aviator | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2003 | Lincoln | LS | 3.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2003 | Lincoln | Navigator | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2003 | Lincoln | Town Car | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2003 | Mazda | 6 | 3.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2003 | Mazda | 6 | 2.3L | L4 | — | N/A | Gap 0.052 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2003 | Mazda | B2300 | 2.3L | L4 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2003 | Mazda | B3000 | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2003 | Mazda | MPV | 3.0L | V6 | — | N/A | OE Type; Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2003 | Mazda | Tribute | 3.0L | V6 | — | N/A | Gap 0.052 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2003 | Mercury | Grand Marquis | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2003 | Mercury | Marauder | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2003 | Mercury | Mountaineer | 4.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2003 | Mercury | Mountaineer | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2003 | Mercury | Sable | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2003 | Oldsmobile | Aurora | 4.0L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2002 | Aston Martin | DB7 | 6.0L | V12 | — | N/A | Gap 0.052 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2002 | Cadillac | DeVille | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2002 | Cadillac | Eldorado | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2002 | Cadillac | Seville | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2002 | Ford | Crown Victoria | 4.6L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2002 | Ford | E-150 Econoline | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2002 | Ford | E-150 Econoline | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2002 | Ford | E-150 Econoline Club Wagon | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2002 | Ford | Escape | 3.0L | V6 | — | N/A | OE Type; Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2002 | Ford | Expedition | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2002 | Ford | Expedition | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2002 | Ford | Explorer | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2002 | Ford | F-150 | 5.4L | V8 | CNG | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2002 | Ford | F-150 | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2002 | Ford | F-250 Super Duty | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2002 | Ford | Mustang | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2002 | Ford | Ranger | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2002 | Ford | Ranger | 2.3L | L4 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2002 | Ford | Taurus | 3.0L | V6 | GAS | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2002 | Ford | Taurus | 3.0L | V6 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2002 | Lincoln | Blackwood | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2002 | Lincoln | Continental | 4.6L | V8 | — | N/A | OE Type; Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2002 | Lincoln | LS | 3.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2002 | Lincoln | Navigator | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2002 | Lincoln | Town Car | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2002 | Mazda | B2300 | 2.3L | L4 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2002 | Mazda | B3000 | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2002 | Mazda | MPV | 3.0L | V6 | — | N/A | OE Type; Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2002 | Mazda | Tribute | 3.0L | V6 | — | N/A | Gap 0.052 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2002 | Mercury | Cougar | 2.5L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2002 | Mercury | Grand Marquis | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2002 | Mercury | Mountaineer | 4.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2002 | Mercury | Mountaineer | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2002 | Mercury | Sable | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2002 | Oldsmobile | Aurora | 4.0L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2002 | Oldsmobile | Aurora | 3.5L | V6 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2002 | Oldsmobile | Intrigue | 3.5L | V6 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2002 | Pontiac | Sunfire | 2.4L | L4 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2001 | Aston Martin | DB7 | 6.0L | V12 | — | N/A | Gap 0.052 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2001 | Cadillac | DeVille | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2001 | Cadillac | Eldorado | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2001 | Cadillac | Seville | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2001 | Ford | Crown Victoria | 4.6L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2001 | Ford | E-150 Econoline | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2001 | Ford | E-150 Econoline | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2001 | Ford | E-150 Econoline Club Wagon | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2001 | Ford | Escape | 3.0L | V6 | — | N/A | OE Type; Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2001 | Ford | Expedition | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2001 | Ford | Expedition | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2001 | Ford | F-150 | 5.4L | V8 | CNG | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2001 | Ford | F-150 | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2001 | Ford | F-250 Super Duty | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2001 | Ford | Mustang | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2001 | Ford | Ranger | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2001 | Ford | Ranger | 2.5L | L4 | — | N/A | 2 Plugs Per Cylinder Required; Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2001 | Ford | Ranger | 2.3L | L4 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2001 | Ford | Taurus | 3.0L | V6 | GAS | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2001 | Ford | Taurus | 3.0L | V6 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2001 | Lincoln | Continental | 4.6L | V8 | — | N/A | OE Type; Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2001 | Lincoln | LS | 3.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2001 | Lincoln | Navigator | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2001 | Lincoln | Town Car | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2001 | Mazda | B2300 | 2.3L | L4 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2001 | Mazda | B3000 | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2001 | Mazda | Tribute | 3.0L | V6 | — | N/A | Gap 0.052 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2001 | Mercury | Cougar | 2.5L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2001 | Mercury | Grand Marquis | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2001 | Mercury | Mountaineer | 4.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2001 | Mercury | Sable | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2001 | Oldsmobile | Alero | 2.4L | L4 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2001 | Oldsmobile | Aurora | 4.0L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2001 | Oldsmobile | Aurora | 3.5L | V6 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2001 | Oldsmobile | Intrigue | 3.5L | V6 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2001 | Pontiac | Sunfire | 2.4L | L4 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2000 | Cadillac | DeVille | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2000 | Cadillac | Eldorado | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2000 | Cadillac | Seville | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2000 | Ford | Crown Victoria | 4.6L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2000 | Ford | E-150 Econoline | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2000 | Ford | E-150 Econoline | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2000 | Ford | E-150 Econoline Club Wagon | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2000 | Ford | Expedition | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2000 | Ford | Expedition | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2000 | Ford | F-150 | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2000 | Ford | F-250 Super Duty | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2000 | Ford | Mustang | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2000 | Ford | Ranger | 2.5L | L4 | — | N/A | 2 Plugs Per Cylinder Required; Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2000 | Ford | Taurus | 3.0L | V6 | GAS | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2000 | Ford | Taurus | 3.0L | V6 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2000 | Ford | Windstar | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2000 | Lincoln | Continental | 4.6L | V8 | — | N/A | OE Type; Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2000 | Lincoln | LS | 3.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2000 | Lincoln | Navigator | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2000 | Lincoln | Town Car | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2000 | Mazda | B4000 | 4.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2000 | Mercury | Cougar | 2.5L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2000 | Mercury | Grand Marquis | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2000 | Mercury | Mountaineer | 4.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2000 | Mercury | Sable | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 2000 | Oldsmobile | Alero | 2.4L | L4 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2000 | Oldsmobile | Intrigue | 3.5L | V6 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 2000 | Pontiac | Sunfire | 2.4L | L4 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 1999 | Audi | A8 | 3.7L | V8 | — | N/A | Gap 0.032 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1999 | Cadillac | DeVille | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 1999 | Cadillac | Eldorado | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 1999 | Cadillac | Seville | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 1999 | Ford | Crown Victoria | 4.6L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1999 | Ford | E-150 Econoline | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1999 | Ford | E-150 Econoline | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1999 | Ford | E-150 Econoline Club Wagon | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1999 | Ford | Expedition | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1999 | Ford | Expedition | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1999 | Ford | F-150 | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1999 | Ford | F-250 | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1999 | Ford | F-250 Super Duty | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1999 | Ford | Mustang | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1999 | Ford | Ranger | 2.5L | L4 | — | N/A | 2 Plugs Per Cylinder Required; Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1999 | Ford | Taurus | 3.0L | V6 | GAS | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1999 | Ford | Taurus | 3.0L | V6 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1999 | Ford | Taurus | 3.4L | V8 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1999 | Ford | Windstar | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1999 | Lincoln | Continental | 4.6L | V8 | — | N/A | OE Type; Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1999 | Lincoln | Navigator | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1999 | Lincoln | Town Car | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1999 | Mazda | B4000 | 4.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1999 | Mercury | Cougar | 2.5L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1999 | Mercury | Grand Marquis | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1999 | Mercury | Mountaineer | 4.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1999 | Mercury | Sable | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1999 | Oldsmobile | Alero | 2.4L | L4 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 1999 | Oldsmobile | Aurora | 4.0L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 1999 | Oldsmobile | Intrigue | 3.5L | V6 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 1999 | Pontiac | Sunfire | 2.4L | L4 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 1998 | Audi | A8 | 3.7L | V8 | — | N/A | Gap 0.032 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1998 | Cadillac | DeVille | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 1998 | Cadillac | Eldorado | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 1998 | Cadillac | Seville | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 1998 | Ford | Crown Victoria | 4.6L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1998 | Ford | E-150 Econoline | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1998 | Ford | E-150 Econoline | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1998 | Ford | E-150 Econoline Club Wagon | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1998 | Ford | E-350 Econoline | 6.8L | V10 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1998 | Ford | Expedition | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1998 | Ford | Expedition | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1998 | Ford | F-150 | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1998 | Ford | F-250 | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1998 | Ford | Mustang | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1998 | Ford | Ranger | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1998 | Ford | Ranger | 2.5L | L4 | — | N/A | 2 Plugs Per Cylinder Required; Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1998 | Ford | Taurus | 3.0L | V6 | GAS | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1998 | Ford | Taurus | 3.0L | V6 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1998 | Ford | Taurus | 3.4L | V8 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1998 | Ford | Windstar | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1998 | Lincoln | Continental | 4.6L | V8 | — | N/A | OE Type; Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1998 | Lincoln | Mark VIII | 4.6L | V8 | — | N/A | OE Type; Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1998 | Lincoln | Navigator | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1998 | Lincoln | Town Car | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1998 | Mazda | B3000 | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1998 | Mazda | B4000 | 4.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1998 | Mercury | Grand Marquis | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1998 | Mercury | Mountaineer | 4.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1998 | Mercury | Sable | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1998 | Oldsmobile | Aurora | 4.0L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 1997 | Audi | A8 | 3.7L | V8 | — | N/A | Gap 0.032 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1997 | Cadillac | DeVille | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 1997 | Cadillac | Eldorado | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 1997 | Cadillac | Seville | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 1997 | Ford | Aerostar | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1997 | Ford | Aerostar | 4.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1997 | Ford | Crown Victoria | 4.6L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1997 | Ford | E-150 Econoline | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1997 | Ford | E-150 Econoline | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1997 | Ford | E-150 Econoline Club Wagon | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1997 | Ford | Expedition | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1997 | Ford | Expedition | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1997 | Ford | F-150 | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1997 | Ford | F-150 | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1997 | Ford | F-250 | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1997 | Ford | Mustang | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1997 | Ford | Ranger | 2.3L | L4 | — | N/A | 2 Plugs Per Cylinder Required; Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1997 | Ford | Ranger | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1997 | Ford | Taurus | 3.0L | V6 | GAS | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1997 | Ford | Taurus | 3.0L | V6 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1997 | Ford | Taurus | 3.4L | V8 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1997 | Ford | Thunderbird | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1997 | Ford | Windstar | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1997 | Lincoln | Continental | 4.6L | V8 | — | N/A | OE Type; Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1997 | Lincoln | Mark VIII | 4.6L | V8 | — | N/A | OE Type; Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1997 | Lincoln | Town Car | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1997 | Mazda | B2300 | 2.3L | L4 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1997 | Mazda | B3000 | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1997 | Mazda | B4000 | 4.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1997 | Mercury | Cougar | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1997 | Mercury | Grand Marquis | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1997 | Mercury | Sable | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1997 | Oldsmobile | Aurora | 4.0L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 1996 | Cadillac | DeVille | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 1996 | Cadillac | Eldorado | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 1996 | Cadillac | Seville | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 1996 | Chevrolet | Corvette | 5.7L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 1996 | Ford | Aerostar | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1996 | Ford | Crown Victoria | 4.6L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1996 | Ford | Mustang | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1996 | Ford | Ranger | 2.3L | L4 | — | N/A | 2 Plugs Per Cylinder Required; Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1996 | Ford | Ranger | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1996 | Ford | Taurus | 3.0L | V6 | GAS | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1996 | Ford | Taurus | 3.0L | V6 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1996 | Ford | Taurus | 3.4L | V8 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1996 | Ford | Thunderbird | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1996 | Ford | Windstar | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1996 | Lincoln | Continental | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1996 | Lincoln | Mark VIII | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1996 | Lincoln | Town Car | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1996 | Mazda | B2300 | 2.3L | L4 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1996 | Mazda | B3000 | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1996 | Mercury | Cougar | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1996 | Mercury | Grand Marquis | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1996 | Mercury | Sable | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1996 | Oldsmobile | Aurora | 4.0L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 1995 | Cadillac | DeVille | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 1995 | Cadillac | Eldorado | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 1995 | Cadillac | Seville | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 1995 | Chevrolet | Corvette | 5.7L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 1995 | Ford | Aerostar | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1995 | Ford | Crown Victoria | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1995 | Ford | Ranger | 2.3L | L4 | — | N/A | 2 Plugs Per Cylinder Required; Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1995 | Ford | Ranger | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1995 | Ford | Taurus | 3.0L | V6 | GAS | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1995 | Ford | Thunderbird | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1995 | Ford | Windstar | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1995 | Lincoln | Continental | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1995 | Lincoln | Mark VIII | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1995 | Lincoln | Town Car | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1995 | Mazda | B2300 | 2.3L | L4 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1995 | Mazda | B3000 | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1995 | Mercury | Cougar | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1995 | Mercury | Grand Marquis | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1995 | Mercury | Sable | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1995 | Oldsmobile | Aurora | 4.0L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 1994 | Cadillac | DeVille | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 1994 | Cadillac | Eldorado | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 1994 | Cadillac | Seville | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 1994 | Chevrolet | Corvette | 5.7L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 1994 | Ford | Aerostar | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1994 | Ford | Crown Victoria | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1994 | Ford | Ranger | 2.3L | L4 | — | N/A | 2 Plugs Per Cylinder Required; Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1994 | Ford | Ranger | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1994 | Ford | Taurus | 3.0L | V6 | GAS | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1994 | Ford | Tempo | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1994 | Ford | Thunderbird | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1994 | Lincoln | Mark VIII | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1994 | Lincoln | Town Car | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1994 | Mazda | B2300 | 2.3L | L4 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1994 | Mazda | B3000 | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1994 | Mercury | Cougar | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1994 | Mercury | Grand Marquis | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1994 | Mercury | Sable | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1994 | Mercury | Topaz | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1993 | Cadillac | Allante | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 1993 | Cadillac | Eldorado | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 1993 | Cadillac | Seville | 4.6L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 1993 | Chevrolet | Corvette | 5.7L | V8 | — | N/A | Gap 0.050 (in), Plug Type RS12WYPB4; Champion Iridium |
| 1993 | Ford | Aerostar | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1993 | Ford | Crown Victoria | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1993 | Ford | Mustang | 2.3L | L4 | — | N/A | 2 Plugs Per Cylinder Required; Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1993 | Ford | Ranger | 2.3L | L4 | — | N/A | 2 Plugs Per Cylinder Required; Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1993 | Ford | Ranger | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1993 | Ford | Taurus | 3.0L | V6 | GAS | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1993 | Ford | Tempo | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1993 | Lincoln | Mark VIII | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1993 | Lincoln | Town Car | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1993 | Mercedes-Benz | 190E | 2.3L | L4 | — | N/A | Gap 0.032 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1993 | Mercedes-Benz | 190E | 2.6L | L6 | — | N/A | Gap 0.032 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1993 | Mercedes-Benz | 300E | 3.0L | L6 | — | N/A | Gap 0.032 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1993 | Mercedes-Benz | 300TE | 3.0L | L6 | — | N/A | Gap 0.032 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1993 | Mercury | Grand Marquis | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1993 | Mercury | Sable | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1993 | Mercury | Topaz | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1992 | Ford | Aerostar | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1992 | Ford | Crown Victoria | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1992 | Ford | Mustang | 2.3L | L4 | — | N/A | 2 Plugs Per Cylinder Required; Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1992 | Ford | Probe | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1992 | Ford | Ranger | 2.3L | L4 | — | N/A | 2 Plugs Per Cylinder Required; Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1992 | Ford | Ranger | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1992 | Ford | Taurus | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1992 | Ford | Tempo | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1992 | Lincoln | Town Car | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1992 | Mercedes-Benz | 190E | 2.3L | L4 | — | N/A | Gap 0.032 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1992 | Mercedes-Benz | 190E | 2.6L | L6 | — | N/A | Gap 0.032 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1992 | Mercedes-Benz | 300E | 3.0L | L6 | — | N/A | Gap 0.032 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1992 | Mercedes-Benz | 300E | 2.6L | L6 | — | N/A | Gap 0.032 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1992 | Mercedes-Benz | 300TE | 3.0L | L6 | — | N/A | Gap 0.032 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1992 | Mercury | Grand Marquis | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1992 | Mercury | Sable | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1992 | Mercury | Topaz | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1991 | Ford | Aerostar | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1991 | Ford | Mustang | 2.3L | L4 | — | N/A | 2 Plugs Per Cylinder Required; Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1991 | Ford | Probe | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1991 | Ford | Ranger | 2.3L | L4 | — | N/A | 2 Plugs Per Cylinder Required; Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1991 | Ford | Ranger | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1991 | Ford | Taurus | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1991 | Ford | Taurus | 2.5L | L4 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1991 | Lincoln | Town Car | 4.6L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1991 | Mercedes-Benz | 190E | 2.3L | L4 | — | N/A | Gap 0.032 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1991 | Mercedes-Benz | 190E | 2.6L | L6 | — | N/A | Gap 0.032 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1991 | Mercedes-Benz | 300E | 3.0L | L6 | — | N/A | Gap 0.032 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1991 | Mercedes-Benz | 300E | 2.6L | L6 | — | N/A | Gap 0.032 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1991 | Mercedes-Benz | 300SE | 3.0L | L6 | — | N/A | Gap 0.032 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1991 | Mercedes-Benz | 300SEL | 3.0L | L6 | — | N/A | Gap 0.032 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1991 | Mercedes-Benz | 300TE | 3.0L | L6 | — | N/A | Gap 0.032 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1991 | Mercury | Sable | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1990 | Ford | Aerostar | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1990 | Ford | Probe | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1990 | Ford | Ranger | 2.3L | L4 | — | N/A | 2 Plugs Per Cylinder Required; Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1990 | Ford | Taurus | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1990 | Ford | Taurus | 2.5L | L4 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1990 | Mercedes-Benz | 190E | 2.6L | L6 | — | N/A | Gap 0.032 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1990 | Mercedes-Benz | 300E | 3.0L | L6 | — | N/A | Gap 0.032 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1990 | Mercedes-Benz | 300E | 2.6L | L6 | — | N/A | Gap 0.032 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1990 | Mercedes-Benz | 300SE | 3.0L | L6 | — | N/A | Gap 0.032 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1990 | Mercedes-Benz | 300SEL | 3.0L | L6 | — | N/A | Gap 0.032 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1990 | Mercedes-Benz | 300TE | 3.0L | L6 | — | N/A | Gap 0.032 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1990 | Mercury | Sable | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1989 | Ford | Aerostar | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1989 | Ford | Ranger | 2.3L | L4 | — | N/A | 2 Plugs Per Cylinder Required; Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1989 | Ford | Taurus | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1989 | Ford | Taurus | 2.5L | L4 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1989 | Mercedes-Benz | 190E | 2.6L | L6 | — | N/A | Gap 0.032 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1989 | Mercedes-Benz | 260E | 2.6L | L6 | — | N/A | Gap 0.032 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1989 | Mercedes-Benz | 300CE | 3.0L | L6 | — | N/A | Gap 0.032 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1989 | Mercedes-Benz | 300E | 3.0L | L6 | — | N/A | Gap 0.032 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1989 | Mercedes-Benz | 300SE | 3.0L | L6 | — | N/A | Gap 0.032 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1989 | Mercedes-Benz | 300SEL | 3.0L | L6 | — | N/A | Gap 0.032 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1989 | Mercedes-Benz | 300TE | 3.0L | L6 | — | N/A | Gap 0.032 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1989 | Mercury | Sable | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1988 | Ford | Aerostar | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1988 | Ford | Taurus | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1988 | Ford | Taurus | 2.5L | L4 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1988 | Ford | Tempo | 2.3L | L4 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1988 | Mercedes-Benz | 190E | 2.3L | L4 | — | N/A | Gap 0.032 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1988 | Mercedes-Benz | 190E | 2.6L | L6 | — | N/A | Gap 0.032 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1988 | Mercedes-Benz | 260E | 2.6L | L6 | — | N/A | Gap 0.032 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1988 | Mercedes-Benz | 300CE | 3.0L | L6 | — | N/A | Gap 0.032 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1988 | Mercedes-Benz | 300E | 3.0L | L6 | — | N/A | Gap 0.032 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1988 | Mercedes-Benz | 300SE | 3.0L | L6 | — | N/A | Gap 0.032 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1988 | Mercedes-Benz | 300SEL | 3.0L | L6 | — | N/A | Gap 0.032 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1988 | Mercedes-Benz | 300TE | 3.0L | L6 | — | N/A | Gap 0.032 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1988 | Mercury | Sable | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1987 | Ford | Aerostar | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1987 | Ford | Taurus | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1987 | Ford | Taurus | 2.5L | L4 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1987 | Ford | Tempo | 2.3L | L4 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1987 | Mercedes-Benz | 190E | 2.3L | L4 | — | N/A | Gap 0.032 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1987 | Mercedes-Benz | 190E | 2.6L | L6 | — | N/A | Gap 0.032 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1987 | Mercedes-Benz | 260E | 2.6L | L6 | — | N/A | Gap 0.032 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1987 | Mercedes-Benz | 300E | 3.0L | L6 | — | N/A | Gap 0.032 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1987 | Mercury | Sable | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1987 | Pontiac | Grand Am | 3.0L | V6 | — | N/A | Gap 0.045 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1986 | Ford | Aerostar | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1986 | Ford | Mustang | 2.3L | L4 | — | N/A | Gap 0.035 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1986 | Ford | Taurus | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1986 | Ford | Taurus | 2.5L | L4 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1986 | Ford | Tempo | 2.3L | L4 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1986 | Mercedes-Benz | 190E | 2.3L | L4 | — | N/A | Gap 0.032 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1986 | Mercedes-Benz | 300E | 3.0L | L6 | — | N/A | Gap 0.032 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1986 | Mercury | Cougar | 2.3L | L4 | — | N/A | Gap 0.034 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1986 | Mercury | Sable | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1986 | Mercury | Sable | 2.5L | L4 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1986 | Pontiac | Grand Am | 3.0L | V6 | — | N/A | Gap 0.045 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1985 | Ford | LTD | 2.3L | L4 | LPG | N/A | Gap 0.035 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1985 | Ford | Mustang | 2.3L | L4 | — | N/A | Gap 0.035 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1985 | Ford | Tempo | 2.3L | L4 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1985 | Mercedes-Benz | 190E | 2.3L | L4 | — | N/A | Gap 0.032 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1985 | Mercury | Cougar | 2.3L | L4 | — | N/A | Gap 0.034 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1985 | Pontiac | Grand Am | 3.0L | V6 | — | N/A | Gap 0.040 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1984 | Ford | LTD | 2.3L | L4 | LPG | N/A | Gap 0.035 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1984 | Ford | Mustang | 2.3L | L4 | — | N/A | Gap 0.035 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1984 | Mercedes-Benz | 190E | 2.3L | L4 | — | N/A | Gap 0.032 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1984 | Mercury | Capri | 2.3L | L4 | — | N/A | Gap 0.035 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1984 | Mercury | Cougar | 2.3L | L4 | — | N/A | Gap 0.034 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1984 | Mercury | Lynx | 1.6L | L4 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1984 | Mercury | Marquis | 2.3L | L4 | LPG | N/A | Gap 0.035 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1983 | Ford | Escort | 1.6L | L4 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1983 | Ford | LTD | 2.3L | L4 | LPG | N/A | Gap 0.035 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1983 | Ford | Mustang | 2.3L | L4 | — | N/A | Gap 0.035 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1983 | Mercury | Capri | 2.3L | L4 | — | N/A | Gap 0.035 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1983 | Mercury | LN7 | 1.6L | L4 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1983 | Mercury | Lynx | 1.6L | L4 | — | N/A | Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1983 | Mercury | Marquis | 2.3L | L4 | LPG | N/A | Gap 0.035 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1982 | Ford | Escort | 1.6L | L4 | — | N/A | Tapered Seat; Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1982 | Mercury | Cougar | 2.3L | L4 | — | N/A | Gap 0.034 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1982 | Mercury | LN7 | 1.6L | L4 | — | N/A | Tapered Seat; Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1982 | Mercury | Lynx | 1.6L | L4 | — | N/A | Tapered Seat; Gap 0.044 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1981 | Ford | Mustang | 2.3L | L4 | — | N/A | Gap 0.034 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1981 | Mercury | Cougar | 2.3L | L4 | — | N/A | Gap 0.034 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1980 | Ford | Mustang | 2.3L | L4 | — | N/A | Gap 0.034 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| 1979 | Ford | Mustang | 2.3L | L4 | — | N/A | Gap 0.034 (in); Plug Type Number RS12WYPB4; Champion Iridium |
| No rows match your filter. | |||||||
Directly replaces or cross-references 16 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Autolite — XP104DENSO Auto Parts — 4505DENSO Auto Parts — 6044Walker Exhaust — 41948312571533AGSF22WMCGSF22FCGSF22NHGR8DQIIT16ITR5F13RS12WYPB4TR5BP12TR5C12ZZC218110A