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Champion 304 Spark Plug
| Brand | Champion 304 |
|---|---|
| Center Electrode Diameter (Inch) | 0.1 |
| Center Electrode Tip Material | Nickel |
| Classification | Champion Copper Plus |
| Electrical Terminal Type | Removable Nut |
| Ground Electrode Core Material | Nickel |
| Ground Electrode Material | Nickel Copper Alloy |
| Ground Electrode Quantity | 1 |
| Hex Size | 0.625 |
| Hex Size | 15.880 |
| Hex Type | Hex |
| Installed Height (Inch) | 1.99 |
| Insulator Height | 0.06 |
| Insulator Projection (Inch) | 0.06 |
| Manufacturer Heat Range | 9 |
| Plug Type | RS9YC |
| Pre-Gap Size | 0.035 |
| Pre-Gap Size | 0.89 |
| Reach | 0.689 |
| Resistor Type | Yes |
| Seat Type | Tapered |
| Taper Diameter (Inch) | 0.25 |
| Thread Diameter | 0.551 |
| Thread Diameter | 14.000 |
| Product line | Copper Plus |
| Fits | Ford, Aston Martin, Cadillac, Chevrolet, Mobility Ventures, Lincoln, Mercury, Jaguar, Panoz, Mazda, GMC, Shelby, Audi, Dodge, Eagle, Peugeot, Volvo, Pontiac, Renault, and DeLorean · 429 vehicles |
Copper core electrode. Improves conductivity and heat control for steady wear.
Resistor type. Helps reduce electrical noise for cleaner ignition performance.
Tapered seat design. Provides a secure, precise spark plug fit.
Cross-references AMS Automotive 4031, AMS Automotive 6231 and AMS Automotive 6837 for the same application. See all 75.
Champion Copper Plus 304 Spark Plug
Champion Copper Plus 304 is a replacement spark plug built for dependable ignition performance and consistent heat control. Its copper core electrode helps improve conductivity, while nickel center and ground electrode materials support steady wear characteristics for everyday driving and service intervals.
Key Features
- Copper core electrode for improved conductivity and heat management
- Nickel center electrode tip and nickel copper alloy ground electrode
- Pre-gapped at 0.035 in / 0.89 mm
- Resistor-type design for ignition system noise control
- Tapered seat with 14 mm thread diameter and 0.689 in reach
- Removable nut terminal and 0.625 in hex size
- Champion Copper Plus classification, part number 304
Product Details
The Champion Copper Plus line focuses on straightforward OE-style ignition service with a copper core for efficient spark transfer and heat control. This Champion 304 spark plug uses nickel-based electrode materials and a tapered seat design, making it a practical choice for routine maintenance on a wide range of vehicles. It is listed for applications such as Ford Mustang, Ford F-150, Chevrolet Corvette, Cadillac CTS, and Ford E-350 Super Duty, with fitment varying by year and engine configuration.
This part cross-references Autolite 103 and Bosch 7918 for the same application.
What It Helps Address
- Hard starting caused by worn or fouled spark plugs
- Rough idle from inconsistent ignition firing
- Misfire conditions related to plug wear or incorrect gap
- Reduced throttle response from weak spark delivery
- Maintenance replacement for high-mileage ignition service
Installation Notes and Tips
Verify the vehicle’s required plug type, seat style, reach, thread diameter, and gap before installation. This plug is pre-gapped at 0.035 in, but many listed applications call for different gap specifications, including 0.040 in, 0.044 in, 0.050 in, 0.051 in, 0.052 in, and 0.054 in depending on the vehicle. Confirm the correct specification for your exact engine before tightening to the manufacturer’s torque recommendation.
Compatible With select applications including Fits 2013-2014 Ford Mustang, N/A; Fits 2007-2012 Ford Mustang, N/A; Fits 2006-2011 Ford Crown Victoria, N/A; Fits 2006-2011 Ford Focus, N/A; Fits 2006-2011 Lincoln Town Car, N/A; Fits 2006-2011 Mercury Grand Marquis, N/A; Fits 2006-2013 Chevrolet Corvette, N/A; Fits 2009-2015 Cadillac CTS, N/A; Fits 2012-2015 Chevrolet Camaro, N/A; Fits 1999-2019 Ford E-350 Super Duty, N/A.
Quality Assurance
Champion Copper Plus spark plugs are built around a copper core design for stable conductivity and heat control, with nickel electrode materials selected for consistent service performance. Part number 304 is engineered to match the listed OE-style applications and interchange references for secondary ignition service.
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2019 | Ford | E-350 Super Duty | 6.8L | V10 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2018 | Aston Martin | Rapide | 6.0L | V12 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2018 | Aston Martin | Vanquish | 6.0L | V12 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2018 | Ford | E-350 Super Duty | 6.8L | V10 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2017 | Aston Martin | Rapide | 6.0L | V12 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2017 | Aston Martin | V12 Vantage | 6.0L | V12 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2017 | Aston Martin | Vanquish | 6.0L | V12 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2017 | Ford | E-350 Super Duty | 6.8L | V10 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2016 | Aston Martin | DB9 | 6.0L | V12 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2016 | Aston Martin | Rapide | 6.0L | V12 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2016 | Aston Martin | V12 Vantage | 6.0L | V12 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2016 | Aston Martin | Vanquish | 6.0L | V12 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2016 | Ford | E-350 Super Duty | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2016 | Ford | E-350 Super Duty | 6.8L | V10 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2015 | Aston Martin | DB9 | 6.0L | V12 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2015 | Aston Martin | Rapide | 6.0L | V12 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2015 | Aston Martin | V12 Vantage | 6.0L | V12 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2015 | Aston Martin | Vanquish | 6.0L | V12 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2015 | Cadillac | CTS | 6.2L | V8 | — | N/A | Gap 0.040 (in); Plug Type Number RS9YC; Copper Plus |
| 2015 | Chevrolet | Camaro | 7.0L | V8 | — | N/A | Gap 0.040 (in); Plug Type Number RS9YC; Copper Plus |
| 2015 | Chevrolet | Camaro | 6.2L | V8 | — | N/A | Gap 0.040 (in); Plug Type Number RS9YC; Copper Plus |
| 2015 | Ford | E-350 Super Duty | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2015 | Ford | E-350 Super Duty | 6.8L | V10 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2014 | Aston Martin | DB9 | 6.0L | V12 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2014 | Aston Martin | Rapide | 6.0L | V12 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2014 | Aston Martin | Vanquish | 6.0L | V12 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2014 | Cadillac | CTS | 6.2L | V8 | — | N/A | Gap 0.040 (in); Plug Type Number RS9YC; Copper Plus |
| 2014 | Chevrolet | Camaro | 7.0L | V8 | — | N/A | Gap 0.040 (in); Plug Type Number RS9YC; Copper Plus |
| 2014 | Chevrolet | Camaro | 6.2L | V8 | — | N/A | Gap 0.040 (in); Plug Type Number RS9YC; Copper Plus |
| 2014 | Ford | E-150 | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2014 | Ford | E-150 | 4.6L | V8 | — | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2014 | Ford | E-250 | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2014 | Ford | E-250 | 4.6L | V8 | — | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2014 | Ford | E-350 Super Duty | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2014 | Ford | E-350 Super Duty | 6.8L | V10 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2014 | Ford | Mustang | 5.8L | V8 | — | N/A | Gap 0.035 (in); Plug Type Number RS9YC; Copper Plus |
| 2013 | Aston Martin | DB9 | 6.0L | V12 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2013 | Aston Martin | Rapide | 6.0L | V12 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2013 | Aston Martin | V12 Vantage | 6.0L | V12 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2013 | Cadillac | CTS | 6.2L | V8 | — | N/A | Gap 0.040 (in); Plug Type Number RS9YC; Copper Plus |
| 2013 | Chevrolet | Camaro | 6.2L | V8 | — | N/A | Gap 0.040 (in); Plug Type Number RS9YC; Copper Plus |
| 2013 | Chevrolet | Corvette | 7.0L | V8 | — | N/A | Gap 0.040 (in); Plug Type Number RS9YC; Copper Plus |
| 2013 | Chevrolet | Corvette | 6.2L | V8 | — | N/A | Gap 0.040 (in); Plug Type Number RS9YC; Copper Plus |
| 2013 | Ford | E-150 | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2013 | Ford | E-250 | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2013 | Ford | E-350 Super Duty | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2013 | Ford | E-350 Super Duty | 6.8L | V10 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2013 | Ford | Mustang | 5.8L | V8 | — | N/A | Gap 0.035 (in); Plug Type Number RS9YC; Copper Plus |
| 2012 | Aston Martin | DB9 | 6.0L | V12 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2012 | Aston Martin | Rapide | 6.0L | V12 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2012 | Aston Martin | V12 Vantage | 6.0L | V12 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2012 | Aston Martin | Virage | 6.0L | V12 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2012 | Cadillac | CTS | 6.2L | V8 | — | N/A | Gap 0.040 (in); Plug Type Number RS9YC; Copper Plus |
| 2012 | Chevrolet | Camaro | 6.2L | V8 | — | N/A | Gap 0.040 (in); Plug Type Number RS9YC; Copper Plus |
| 2012 | Chevrolet | Corvette | 7.0L | V8 | — | N/A | Gap 0.040 (in); Plug Type Number RS9YC; Copper Plus |
| 2012 | Chevrolet | Corvette | 6.2L | V8 | — | N/A | Gap 0.040 (in); Plug Type Number RS9YC; Copper Plus |
| 2012 | Ford | E-150 | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2012 | Ford | E-250 | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2012 | Ford | E-350 Super Duty | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2012 | Ford | E-350 Super Duty | 6.8L | V10 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2012 | Ford | Mustang | 5.4L | V8 | — | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2011 | Aston Martin | DB9 | 6.0L | V12 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2011 | Aston Martin | Rapide | 6.0L | V12 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2011 | Aston Martin | V12 Vantage | 6.0L | V12 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2011 | Cadillac | CTS | 6.2L | V8 | — | N/A | Gap 0.040 (in); Plug Type Number RS9YC; Copper Plus |
| 2011 | Chevrolet | Corvette | 7.0L | V8 | — | N/A | Gap 0.040 (in); Plug Type Number RS9YC; Copper Plus |
| 2011 | Chevrolet | Corvette | 6.2L | V8 | — | N/A | Gap 0.040 (in); Plug Type Number RS9YC; Copper Plus |
| 2011 | Ford | Crown Victoria | 4.6L | V8 | FLEX | N/A | Gap 0.044 (in); Including CNG Engine; Plug Type Number RS9YC; Copper Plus |
| 2011 | Ford | E-150 | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2011 | Ford | E-250 | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2011 | Ford | E-350 Super Duty | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2011 | Ford | E-350 Super Duty | 6.8L | V10 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2011 | Ford | Focus | 2.0L | L4 | — | N/A | Gap 0.051 (in); Plug Type Number RS9YC; Copper Plus |
| 2011 | Ford | Mustang | 5.4L | V8 | — | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2011 | Lincoln | Town Car | 4.6L | V8 | FLEX | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2011 | Mercury | Grand Marquis | 4.6L | V8 | FLEX | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2010 | Aston Martin | DB9 | 6.0L | V12 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2010 | Aston Martin | V12 Vantage | 6.0L | V12 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2010 | Cadillac | CTS | 6.2L | V8 | — | N/A | Gap 0.040 (in); Plug Type Number RS9YC; Copper Plus |
| 2010 | Chevrolet | Corvette | 7.0L | V8 | — | N/A | Gap 0.040 (in); Plug Type Number RS9YC; Copper Plus |
| 2010 | Chevrolet | Corvette | 6.2L | V8 | — | N/A | Gap 0.040 (in); Plug Type Number RS9YC; Copper Plus |
| 2010 | Ford | Crown Victoria | 4.6L | V8 | FLEX | N/A | Gap 0.044 (in); Including CNG Engine; Plug Type Number RS9YC; Copper Plus |
| 2010 | Ford | E-150 | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2010 | Ford | E-250 | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2010 | Ford | E-350 Super Duty | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2010 | Ford | E-350 Super Duty | 6.8L | V10 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2010 | Ford | Focus | 2.0L | L4 | — | N/A | Gap 0.051 (in); Plug Type Number RS9YC; Copper Plus |
| 2010 | Ford | Mustang | 5.4L | V8 | — | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2010 | Lincoln | Town Car | 4.6L | V8 | FLEX | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2010 | Mercury | Grand Marquis | 4.6L | V8 | FLEX | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2009 | Aston Martin | DB9 | 6.0L | V12 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2009 | Cadillac | CTS | 6.2L | V8 | — | N/A | Gap 0.040 (in); Plug Type Number RS9YC; Copper Plus |
| 2009 | Cadillac | STS | 4.4L | V8 | — | N/A | Gap 0.040 (in); Plug Type Number RS9YC; Copper Plus |
| 2009 | Cadillac | XLR | 4.4L | V8 | — | N/A | Gap 0.040 (in); Plug Type Number RS9YC; Copper Plus |
| 2009 | Chevrolet | Corvette | 7.0L | V8 | — | N/A | Gap 0.040 (in); Plug Type Number RS9YC; Copper Plus |
| 2009 | Chevrolet | Corvette | 6.2L | V8 | — | N/A | Gap 0.040 (in); Plug Type Number RS9YC; Copper Plus |
| 2009 | Ford | Crown Victoria | 4.6L | V8 | FLEX | N/A | Gap 0.044 (in); Including CNG Engine; Plug Type Number RS9YC; Copper Plus |
| 2009 | Ford | E-150 | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2009 | Ford | E-250 | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2009 | Ford | E-350 Super Duty | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2009 | Ford | E-350 Super Duty | 6.8L | V10 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2009 | Ford | Focus | 2.0L | L4 | — | N/A | Gap 0.051 (in); Plug Type Number RS9YC; Copper Plus |
| 2009 | Ford | Mustang | 5.4L | V8 | — | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2009 | Lincoln | Town Car | 4.6L | V8 | FLEX | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2009 | Mercury | Grand Marquis | 4.6L | V8 | FLEX | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2008 | Aston Martin | DB9 | 6.0L | V12 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2008 | Cadillac | STS | 4.4L | V8 | — | N/A | Gap 0.040 (in); Plug Type Number RS9YC; Copper Plus |
| 2008 | Cadillac | XLR | 4.4L | V8 | — | N/A | Gap 0.040 (in); Plug Type Number RS9YC; Copper Plus |
| 2008 | Chevrolet | Corvette | 7.0L | V8 | — | N/A | Gap 0.040 (in); Plug Type Number RS9YC; Copper Plus |
| 2008 | Ford | Crown Victoria | 4.6L | V8 | FLEX | N/A | Gap 0.044 (in); Including CNG Engine; Plug Type Number RS9YC; Copper Plus |
| 2008 | Ford | E-150 | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2008 | Ford | E-250 | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2008 | Ford | E-350 Super Duty | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2008 | Ford | E-350 Super Duty | 6.8L | V10 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2008 | Ford | Focus | 2.0L | L4 | — | N/A | Gap 0.051 (in); Plug Type Number RS9YC; Copper Plus |
| 2008 | Ford | Mustang | 5.4L | V8 | — | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2008 | Jaguar | S-Type | 3.0L | V6 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2008 | Jaguar | X-Type | 3.0L | V6 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2008 | Lincoln | Town Car | 4.6L | V8 | FLEX | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2008 | Mercury | Grand Marquis | 4.6L | V8 | FLEX | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2007 | Aston Martin | DB9 | 6.0L | V12 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2007 | Cadillac | STS | 4.4L | V8 | — | N/A | Gap 0.040 (in); Plug Type Number RS9YC; Copper Plus |
| 2007 | Cadillac | XLR | 4.4L | V8 | — | N/A | Gap 0.040 (in); Plug Type Number RS9YC; Copper Plus |
| 2007 | Chevrolet | Corvette | 7.0L | V8 | — | N/A | Gap 0.040 (in); Plug Type Number RS9YC; Copper Plus |
| 2007 | Ford | Crown Victoria | 4.6L | V8 | FLEX | N/A | Gap 0.044 (in); Including CNG Engine; Plug Type Number RS9YC; Copper Plus |
| 2007 | Ford | E-150 | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2007 | Ford | E-250 | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2007 | Ford | E-350 Super Duty | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2007 | Ford | E-350 Super Duty | 6.8L | V10 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2007 | Ford | Focus | 2.0L | L4 | — | N/A | Gap 0.051 (in); Plug Type Number RS9YC; Copper Plus |
| 2007 | Ford | Mustang | 5.4L | V8 | — | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2007 | Jaguar | S-Type | 3.0L | V6 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2007 | Jaguar | X-Type | 3.0L | V6 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2007 | Lincoln | Town Car | 4.6L | V8 | FLEX | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2007 | Mercury | Grand Marquis | 4.6L | V8 | FLEX | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2006 | Aston Martin | DB9 | 6.0L | V12 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2006 | Aston Martin | Vanquish | 6.0L | V12 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2006 | Cadillac | STS | 4.4L | V8 | — | N/A | Gap 0.040 (in); Plug Type Number RS9YC; Copper Plus |
| 2006 | Cadillac | XLR | 4.4L | V8 | — | N/A | Gap 0.040 (in); Plug Type Number RS9YC; Copper Plus |
| 2006 | Chevrolet | Corvette | 7.0L | V8 | — | N/A | Gap 0.040 (in); Plug Type Number RS9YC; Copper Plus |
| 2006 | Ford | Crown Victoria | 4.6L | V8 | FLEX | N/A | Gap 0.044 (in); Including CNG Engine; Plug Type Number RS9YC; Copper Plus |
| 2006 | Ford | E-150 | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2006 | Ford | E-250 | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2006 | Ford | E-350 Super Duty | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2006 | Ford | E-350 Super Duty | 6.8L | V10 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2006 | Ford | Focus | 2.0L | L4 | — | N/A | Gap 0.051 (in); Plug Type Number RS9YC; Copper Plus |
| 2006 | Ford | GT | 5.4L | V8 | — | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2006 | Jaguar | S-Type | 3.0L | V6 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2006 | Jaguar | X-Type | 3.0L | V6 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2006 | Lincoln | Town Car | 4.6L | V8 | FLEX | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2006 | Mercury | Grand Marquis | 4.6L | V8 | FLEX | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2005 | Aston Martin | DB9 | 6.0L | V12 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2005 | Aston Martin | Vanquish | 6.0L | V12 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2005 | Ford | Crown Victoria | 4.6L | V8 | CNG | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2005 | Ford | E-150 | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2005 | Ford | E-150 Club Wagon | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2005 | Ford | E-250 | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2005 | Ford | E-350 Club Wagon | 5.4L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2005 | Ford | E-350 Club Wagon | 6.8L | V10 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2005 | Ford | E-350 Super Duty | 5.4L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2005 | Ford | E-350 Super Duty | 6.8L | V10 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2005 | Ford | Excursion | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2005 | Ford | Excursion | 6.8L | V10 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2005 | Ford | Explorer | 4.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2005 | Ford | Explorer Sport Trac | 4.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2005 | Ford | GT | 5.4L | V8 | — | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2005 | Ford | Taurus | 3.0L | V6 | FLEX | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2005 | Jaguar | S-Type | 3.0L | V6 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2005 | Jaguar | X-Type | 2.5L | V6 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2005 | Jaguar | X-Type | 3.0L | V6 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2005 | Mazda | 3 | 2.3L | L4 | — | N/A | Gap 0.052 (in); Plug Type Number RS9YC; Copper Plus |
| 2004 | Aston Martin | Vanquish | 6.0L | V12 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2004 | Ford | Crown Victoria | 4.6L | V8 | CNG | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2004 | Ford | E-150 | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2004 | Ford | E-150 Club Wagon | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2004 | Ford | E-250 | 5.4L | V8 | CNG | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2004 | Ford | E-250 | 5.4L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2004 | Ford | E-350 Club Wagon | 5.4L | V8 | CNG | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2004 | Ford | E-350 Club Wagon | 5.4L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2004 | Ford | E-350 Super Duty | 5.4L | V8 | CNG | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2004 | Ford | E-350 Super Duty | 5.4L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2004 | Ford | E-350 Super Duty | 6.8L | V10 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2004 | Ford | Excursion | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2004 | Ford | Excursion | 6.8L | V10 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2004 | Ford | Explorer | 4.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2004 | Ford | Explorer Sport Trac | 4.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2004 | Ford | F-150 Heritage | 5.4L | V8 | BI-FUEL | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2004 | Ford | F-150 Heritage | 5.4L | V8 | GAS | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2004 | Ford | F-150 Heritage | 5.4L | V8 | CNG | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2004 | Ford | F-250 Super Duty | 6.8L | V10 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2004 | Ford | F-350 Super Duty | 6.8L | V10 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2004 | Ford | F-350 Super Duty | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2004 | Ford | Taurus | 3.0L | V6 | FLEX | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2004 | Jaguar | S-Type | 3.0L | V6 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2004 | Jaguar | X-Type | 2.5L | V6 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2004 | Jaguar | X-Type | 3.0L | V6 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2004 | Mazda | 3 | 2.3L | L4 | — | N/A | Gap 0.052 (in); Plug Type Number RS9YC; Copper Plus |
| 2003 | Aston Martin | Vanquish | 6.0L | V12 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2003 | Ford | Crown Victoria | 4.6L | V8 | CNG | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2003 | Ford | E-150 | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2003 | Ford | E-150 Club Wagon | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2003 | Ford | E-250 | 5.4L | V8 | CNG | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2003 | Ford | E-250 | 5.4L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2003 | Ford | E-350 Club Wagon | 5.4L | V8 | CNG | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2003 | Ford | E-350 Club Wagon | 5.4L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2003 | Ford | E-350 Club Wagon | 6.8L | V10 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2003 | Ford | E-350 Super Duty | 5.4L | V8 | CNG | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2003 | Ford | E-350 Super Duty | 5.4L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2003 | Ford | E-350 Super Duty | 6.8L | V10 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2003 | Ford | Excursion | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2003 | Ford | Excursion | 6.8L | V10 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2003 | Ford | Explorer | 4.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2003 | Ford | Explorer Sport | 4.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2003 | Ford | Explorer Sport Trac | 4.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2003 | Ford | F-150 | 5.4L | V8 | CNG | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2003 | Ford | F-150 | 5.4L | V8 | BI-FUEL | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2003 | Ford | F-150 | 5.4L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2003 | Ford | F-150 | 5.4L | V8 | — | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2003 | Ford | F-250 Super Duty | 6.8L | V10 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2003 | Ford | F-350 Super Duty | 6.8L | V10 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2003 | Ford | F-350 Super Duty | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2003 | Ford | Focus | 2.3L | L4 | — | N/A | Gap 0.051 (in); Plug Type Number RS9YC; Copper Plus |
| 2003 | Ford | Taurus | 3.0L | V6 | FLEX | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2003 | GMC | Sonoma | 2.2L | L4 | — | N/A | Gap 0.040 (in); Plug Type Number RS9YC; Copper Plus |
| 2003 | Jaguar | S-Type | 3.0L | V6 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2003 | Jaguar | X-Type | 2.5L | V6 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2003 | Jaguar | X-Type | 3.0L | V6 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2002 | Aston Martin | Vanquish | 6.0L | V12 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2002 | Ford | Crown Victoria | 4.6L | V8 | CNG | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2002 | Ford | E-250 Econoline | 5.4L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2002 | Ford | E-250 Econoline | 5.4L | V8 | CNG | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2002 | Ford | E-350 Econoline Club Wagon | 5.4L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2002 | Ford | E-350 Econoline Club Wagon | 5.4L | V8 | CNG | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2002 | Ford | E-350 Econoline Club Wagon | 6.8L | V10 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2002 | Ford | E-350 Super Duty | 5.4L | V8 | CNG | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2002 | Ford | E-350 Super Duty | 5.4L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2002 | Ford | E-350 Super Duty | 6.8L | V10 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2002 | Ford | Excursion | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2002 | Ford | Excursion | 6.8L | V10 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2002 | Ford | Explorer | 4.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2002 | Ford | Explorer Sport | 4.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2002 | Ford | Explorer Sport Trac | 4.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2002 | Ford | F-150 | 5.4L | V8 | CNG | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2002 | Ford | F-150 | 5.4L | V8 | BI-FUEL | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2002 | Ford | F-150 | 5.4L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2002 | Ford | F-150 | 5.4L | V8 | — | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2002 | Ford | F-250 Super Duty | 6.8L | V10 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2002 | Ford | F-350 Super Duty | 6.8L | V10 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2002 | Ford | F-350 Super Duty | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2002 | Ford | Taurus | 3.0L | V6 | FLEX | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2002 | GMC | Sonoma | 2.2L | L4 | — | N/A | Gap 0.040 (in); Plug Type Number RS9YC; Copper Plus |
| 2002 | Jaguar | S-Type | 3.0L | V6 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2002 | Jaguar | X-Type | 2.5L | V6 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2002 | Jaguar | X-Type | 3.0L | V6 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2001 | Aston Martin | Vanquish | 6.0L | V12 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2001 | Ford | Crown Victoria | 4.6L | V8 | CNG | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2001 | Ford | E-250 Econoline | 5.4L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2001 | Ford | E-250 Econoline | 5.4L | V8 | CNG | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2001 | Ford | E-350 Econoline Club Wagon | 5.4L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2001 | Ford | E-350 Econoline Club Wagon | 5.4L | V8 | CNG | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2001 | Ford | E-350 Econoline Club Wagon | 6.8L | V10 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2001 | Ford | E-350 Super Duty | 5.4L | V8 | CNG | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2001 | Ford | E-350 Super Duty | 5.4L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2001 | Ford | E-350 Super Duty | 6.8L | V10 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2001 | Ford | Excursion | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2001 | Ford | Excursion | 6.8L | V10 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2001 | Ford | Explorer | 4.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2001 | Ford | Explorer Sport | 4.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2001 | Ford | Explorer Sport Trac | 4.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2001 | Ford | F-150 | 5.4L | V8 | CNG | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2001 | Ford | F-150 | 5.4L | V8 | BI-FUEL | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2001 | Ford | F-150 | 5.4L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2001 | Ford | F-150 | 5.4L | V8 | — | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2001 | Ford | F-250 Super Duty | 6.8L | V10 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2001 | Ford | F-350 Super Duty | 6.8L | V10 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2001 | Ford | F-350 Super Duty | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2001 | Ford | Taurus | 3.0L | V6 | FLEX | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2001 | GMC | Sonoma | 2.2L | L4 | — | N/A | Gap 0.040 (in); Plug Type Number RS9YC; Copper Plus |
| 2001 | Jaguar | S-Type | 3.0L | V6 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2000 | Aston Martin | DB7 | 6.0L | V12 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2000 | Ford | Crown Victoria | 4.6L | V8 | CNG | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2000 | Ford | E-250 Econoline | 5.4L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2000 | Ford | E-250 Econoline | 5.4L | V8 | CNG | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2000 | Ford | E-350 Econoline Club Wagon | 5.4L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2000 | Ford | E-350 Econoline Club Wagon | 5.4L | V8 | CNG | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2000 | Ford | E-350 Econoline Club Wagon | 6.8L | V10 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2000 | Ford | E-350 Super Duty | 5.4L | V8 | CNG | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2000 | Ford | E-350 Super Duty | 5.4L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2000 | Ford | E-350 Super Duty | 6.8L | V10 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2000 | Ford | Excursion | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2000 | Ford | Excursion | 6.8L | V10 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2000 | Ford | Explorer | 4.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2000 | Ford | F-150 | 5.4L | V8 | CNG | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2000 | Ford | F-150 | 5.4L | V8 | BI-FUEL | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2000 | Ford | F-150 | 5.4L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2000 | Ford | F-150 | 5.4L | V8 | — | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2000 | Ford | F-250 Super Duty | 6.8L | V10 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2000 | Ford | F-350 Super Duty | 6.8L | V10 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2000 | Ford | F-350 Super Duty | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2000 | Ford | Mustang | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2000 | Ford | Ranger | 4.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 2000 | Ford | Ranger | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2000 | Ford | Taurus | 3.0L | V6 | FLEX | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 2000 | GMC | Sonoma | 2.2L | L4 | — | N/A | Gap 0.040 (in); Plug Type Number RS9YC; Copper Plus |
| 2000 | Jaguar | S-Type | 3.0L | V6 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 2000 | Mazda | B3000 | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 1999 | Audi | A8 Quattro | 4.2L | V8 | — | N/A | Gap 0.032 (in); Plug Type Number RS9YC; Copper Plus |
| 1999 | Ford | Crown Victoria | 4.6L | V8 | CNG | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 1999 | Ford | E-250 Econoline | 5.4L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 1999 | Ford | E-250 Econoline | 5.4L | V8 | BI-FUEL | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 1999 | Ford | E-250 Econoline | 5.4L | V8 | CNG | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 1999 | Ford | E-350 Econoline Club Wagon | 5.4L | V8 | BI-FUEL | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 1999 | Ford | E-350 Econoline Club Wagon | 5.4L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 1999 | Ford | E-350 Econoline Club Wagon | 5.4L | V8 | CNG | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 1999 | Ford | E-350 Econoline Club Wagon | 6.8L | V10 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 1999 | Ford | E-350 Super Duty | 5.4L | V8 | BI-FUEL | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 1999 | Ford | E-350 Super Duty | 5.4L | V8 | CNG | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 1999 | Ford | E-350 Super Duty | 5.4L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 1999 | Ford | E-350 Super Duty | 6.8L | V10 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 1999 | Ford | Explorer | 4.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 1999 | Ford | F-150 | 5.4L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 1999 | Ford | F-150 | 5.4L | V8 | BI-FUEL | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 1999 | Ford | F-150 | 5.4L | V8 | — | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 1999 | Ford | F-250 | 5.4L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 1999 | Ford | F-250 | 5.4L | V8 | BI-FUEL | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 1999 | Ford | F-250 | 5.4L | V8 | CNG | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 1999 | Ford | F-250 Super Duty | 6.8L | V10 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 1999 | Ford | F-350 Super Duty | 6.8L | V10 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 1999 | Ford | F-350 Super Duty | 5.4L | V8 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 1999 | Ford | Ranger | 4.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 1999 | Ford | Ranger | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 1999 | Ford | Taurus | 3.0L | V6 | FLEX | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 1999 | GMC | Sonoma | 2.2L | L4 | — | N/A | Gap 0.040 (in); Plug Type Number RS9YC; Copper Plus |
| 1999 | Mazda | B3000 | 3.0L | V6 | — | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 1998 | Audi | A8 Quattro | 4.2L | V8 | — | N/A | Gap 0.032 (in); Plug Type Number RS9YC; Copper Plus |
| 1998 | Ford | Crown Victoria | 4.6L | V8 | CNG | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 1998 | Ford | E-250 Econoline | 5.4L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 1998 | Ford | E-250 Econoline | 5.4L | V8 | BI-FUEL | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 1998 | Ford | E-250 Econoline | 5.4L | V8 | CNG | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 1998 | Ford | E-350 Econoline | 5.4L | V8 | CNG | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 1998 | Ford | E-350 Econoline | 5.4L | V8 | BI-FUEL | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 1998 | Ford | E-350 Econoline | 5.4L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 1998 | Ford | E-350 Econoline Club Wagon | 5.4L | V8 | BI-FUEL | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 1998 | Ford | E-350 Econoline Club Wagon | 5.4L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 1998 | Ford | E-350 Econoline Club Wagon | 5.4L | V8 | CNG | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 1998 | Ford | E-350 Econoline Club Wagon | 6.8L | V10 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 1998 | Ford | Explorer | 4.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 1998 | Ford | F-150 | 5.4L | V8 | CNG | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 1998 | Ford | F-150 | 5.4L | V8 | BI-FUEL | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 1998 | Ford | F-150 | 5.4L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 1998 | Ford | F-250 | 5.4L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 1998 | Ford | F-250 | 5.4L | V8 | BI-FUEL | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 1998 | Ford | F-250 | 5.4L | V8 | CNG | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 1998 | Ford | Ranger | 4.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 1998 | Ford | Taurus | 3.0L | V6 | FLEX | N/A | OE Type; Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 1998 | GMC | Sonoma | 2.2L | L4 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 1997 | Audi | A8 Quattro | 4.2L | V8 | — | N/A | Gap 0.032 (in); Plug Type Number RS9YC; Copper Plus |
| 1997 | Ford | Crown Victoria | 4.6L | V8 | CNG | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 1997 | Ford | E-250 Econoline | 5.4L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 1997 | Ford | E-250 Econoline | 5.4L | V8 | CNG | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 1997 | Ford | E-350 Econoline | 5.4L | V8 | CNG | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 1997 | Ford | E-350 Econoline | 5.4L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 1997 | Ford | E-350 Econoline | 6.8L | V10 | — | N/A | OE Type; Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 1997 | Ford | E-350 Econoline Club Wagon | 5.4L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 1997 | Ford | E-350 Econoline Club Wagon | 5.4L | V8 | CNG | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 1997 | Ford | E-350 Econoline Club Wagon | 6.8L | V10 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 1997 | Ford | Explorer | 4.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 1997 | Ford | F-250 | 5.4L | V8 | GAS | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 1997 | Ford | F-250 | 5.4L | V8 | CNG | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 1997 | Ford | Ranger | 4.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 1997 | Ford | Taurus | 3.0L | V6 | FLEX | N/A | OE Type; Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 1996 | Ford | Crown Victoria | 4.6L | V8 | CNG | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 1996 | Ford | Ranger | 4.0L | V6 | — | N/A | Gap 0.054 (in); Plug Type Number RS9YC; Copper Plus |
| 1996 | Ford | Taurus | 3.0L | V6 | FLEX | N/A | OE Type; Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 1996 | Jaguar | XJ12 | 6.0L | V12 | — | N/A | OE Type; Gap 0.035 (in); Plug Type Number RS9YC; Copper Plus |
| 1995 | Chevrolet | Corvette | 5.7L | V8 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 1995 | Jaguar | XJ12 | 6.0L | V12 | — | N/A | OE Type; Gap 0.035 (in); Plug Type Number RS9YC; Copper Plus |
| 1995 | Jaguar | XJS | 6.0L | V12 | — | N/A | OE Type; Gap 0.035 (in); Plug Type Number RS9YC; Copper Plus |
| 1994 | Audi | V8 Quattro | 4.2L | V8 | — | N/A | Gap 0.032 (in); Plug Type Number RS9YC; Copper Plus |
| 1994 | Chevrolet | Corvette | 5.7L | V8 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 1994 | Jaguar | XJ12 | 6.0L | V12 | — | N/A | OE Type; Gap 0.035 (in); Plug Type Number RS9YC; Copper Plus |
| 1994 | Jaguar | XJS | 6.0L | V12 | — | N/A | OE Type; Gap 0.035 (in); Plug Type Number RS9YC; Copper Plus |
| 1993 | Audi | V8 Quattro | 4.2L | V8 | — | N/A | Gap 0.032 (in); Plug Type Number RS9YC; Copper Plus |
| 1993 | Chevrolet | Corvette | 5.7L | V8 | — | N/A | Gap 0.050 (in); Plug Type Number RS9YC; Copper Plus |
| 1993 | Jaguar | XJRS | 6.0L | V12 | — | N/A | OE Type; Gap 0.035 (in); Plug Type Number RS9YC; Copper Plus |
| 1992 | Audi | V8 Quattro | 4.2L | V8 | — | N/A | Gap 0.032 (in); Plug Type Number RS9YC; Copper Plus |
| 1992 | Dodge | Monaco | 3.0L | V6 | — | N/A | Gap 0.035 (in); Actual OE Part; Plug Type Number RS9YC; Copper Plus |
| 1992 | Jaguar | XJ12 | 5.3L | V12 | — | N/A | OE Type; Gap 0.035 (in); Plug Type Number RS9YC; Copper Plus |
| 1992 | Jaguar | XJS | 5.3L | V12 | — | N/A | OE Type; Gap 0.024 (in); Plug Type Number RS9YC; Copper Plus |
| 1991 | Audi | V8 Quattro | 3.6L | V8 | — | N/A | OE Type; Gap 0.032 (in); Plug Type Number RS9YC; Copper Plus |
| 1991 | Dodge | Monaco | 3.0L | V6 | — | N/A | Gap 0.035 (in); Actual OE Part; Plug Type Number RS9YC; Copper Plus |
| 1991 | Jaguar | XJ12 | 5.3L | V12 | — | N/A | OE Type; Gap 0.035 (in); Plug Type Number RS9YC; Copper Plus |
| 1991 | Jaguar | XJS | 5.3L | V12 | — | N/A | OE Type; Gap 0.024 (in); Plug Type Number RS9YC; Copper Plus |
| 1990 | Audi | V8 Quattro | 3.6L | V8 | — | N/A | OE Type; Gap 0.032 (in); Plug Type Number RS9YC; Copper Plus |
| 1990 | Dodge | Monaco | 3.0L | V6 | — | N/A | Gap 0.035 (in); Actual OE Part; Plug Type Number RS9YC; Copper Plus |
| 1990 | Jaguar | XJ12 | 5.3L | V12 | — | N/A | OE Type; Gap 0.035 (in); Plug Type Number RS9YC; Copper Plus |
| 1990 | Jaguar | XJS | 5.3L | V12 | — | N/A | OE Type; Gap 0.024 (in); Plug Type Number RS9YC; Copper Plus |
| 1990 | Volvo | 760 | 2.8L | V6 | — | N/A | OE Type; Gap 0.028 (in); Plug Type Number RS9YC; Copper Plus |
| 1990 | Volvo | 780 | 2.8L | V6 | — | N/A | OE Type; Gap 0.028 (in); Plug Type Number RS9YC; Copper Plus |
| 1989 | Jaguar | XJ12 | 5.3L | V12 | — | N/A | OE Type; Gap 0.035 (in); Plug Type Number RS9YC; Copper Plus |
| 1989 | Jaguar | XJS | 5.3L | V12 | — | N/A | OE Type; Gap 0.024 (in); Plug Type Number RS9YC; Copper Plus |
| 1989 | Pontiac | Firebird | 3.8L | V6 | — | N/A | OE Type; Gap 0.035 (in); Plug Type Number RS9YC; Copper Plus |
| 1989 | Volvo | 760 | 2.8L | V6 | — | N/A | OE Type; Gap 0.028 (in); Plug Type Number RS9YC; Copper Plus |
| 1989 | Volvo | 780 | 2.8L | V6 | — | N/A | OE Type; Gap 0.028 (in); Plug Type Number RS9YC; Copper Plus |
| 1988 | Jaguar | XJ12 | 5.3L | V12 | — | N/A | OE Type; Gap 0.035 (in); Plug Type Number RS9YC; Copper Plus |
| 1988 | Jaguar | XJS | 5.3L | V12 | — | N/A | OE Type; Gap 0.024 (in); Plug Type Number RS9YC; Copper Plus |
| 1988 | Volvo | 760 | 2.8L | V6 | — | N/A | OE Type; Gap 0.028 (in); Plug Type Number RS9YC; Copper Plus |
| 1988 | Volvo | 780 | 2.8L | V6 | — | N/A | OE Type; Gap 0.028 (in); Plug Type Number RS9YC; Copper Plus |
| 1987 | Jaguar | XJ12 | 5.3L | V12 | — | N/A | OE Type; Gap 0.035 (in); Plug Type Number RS9YC; Copper Plus |
| 1987 | Jaguar | XJS | 5.3L | V12 | — | N/A | OE Type; Gap 0.024 (in); Plug Type Number RS9YC; Copper Plus |
| 1987 | Volvo | 760 | 2.8L | V6 | — | N/A | OE Type; Gap 0.028 (in); Plug Type Number RS9YC; Copper Plus |
| 1987 | Volvo | 780 | 2.8L | V6 | — | N/A | OE Type; Gap 0.028 (in); Plug Type Number RS9YC; Copper Plus |
| 1986 | Jaguar | XJ12 | 5.3L | V12 | — | N/A | OE Type; Gap 0.035 (in); Plug Type Number RS9YC; Copper Plus |
| 1986 | Jaguar | XJS | 5.3L | V12 | — | N/A | OE Type; Gap 0.024 (in); Plug Type Number RS9YC; Copper Plus |
| 1986 | Volvo | 760 | 2.8L | V6 | — | N/A | OE Type; Gap 0.028 (in); Plug Type Number RS9YC; Copper Plus |
| 1985 | Ford | Escort | 1.6L | L4 | — | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 1985 | Jaguar | XJ12 | 5.3L | V12 | — | N/A | OE Type; Gap 0.035 (in); Plug Type Number RS9YC; Copper Plus |
| 1985 | Jaguar | XJS | 5.3L | V12 | — | N/A | OE Type; Gap 0.024 (in); Plug Type Number RS9YC; Copper Plus |
| 1985 | Volvo | 760 | 2.8L | V6 | — | N/A | OE Type; Gap 0.028 (in); Plug Type Number RS9YC; Copper Plus |
| 1984 | Ford | Escort | 1.6L | L4 | — | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 1984 | Jaguar | XJ12 | 5.3L | V12 | — | N/A | OE Type; Gap 0.035 (in); Plug Type Number RS9YC; Copper Plus |
| 1984 | Jaguar | XJS | 5.3L | V12 | — | N/A | OE Type; Gap 0.024 (in); Plug Type Number RS9YC; Copper Plus |
| 1984 | Mercury | Lynx | 1.6L | L4 | — | N/A | Gap 0.044 (in); Plug Type Number RS9YC; Copper Plus |
| 1984 | Volvo | 760 | 2.8L | V6 | — | N/A | OE Type; Gap 0.028 (in); Plug Type Number RS9YC; Copper Plus |
| 1983 | Jaguar | XJ12 | 5.3L | V12 | — | N/A | OE Type; Gap 0.035 (in); Plug Type Number RS9YC; Copper Plus |
| 1983 | Jaguar | XJS | 5.3L | V12 | — | N/A | OE Type; Gap 0.024 (in); Plug Type Number RS9YC; Copper Plus |
| 1983 | Volvo | 760 | 2.8L | V6 | — | N/A | OE Type; Gap 0.028 (in); Plug Type Number RS9YC; Copper Plus |
| 1982 | Jaguar | XJ12 | 5.3L | V12 | — | N/A | OE Type; Gap 0.035 (in); Plug Type Number RS9YC; Copper Plus |
| 1982 | Jaguar | XJS | 5.3L | V12 | — | N/A | OE Type; Gap 0.024 (in); Plug Type Number RS9YC; Copper Plus |
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