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OE Quality
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Autolite
Double Platinum Spark PlugAutolite APP5144 Spark Plug
| Brand | Autolite APP5144 |
|---|---|
| Center Electrode Core Material | Platinum |
| Center Electrode Design | Standard / Regular |
| Center Electrode Tip Material | Platinum |
| Electrical Terminal Type | Stud |
| Ground Electrode Core Material | Nickel |
| Ground Electrode Quantity | 1 |
| Ground Electrode Tip Design | Tapered |
| Ground Electrode Tip Material | Platinum |
| Hex Size | 16 |
| Hex Size | 5/8" |
| Insulator Material | Ceramic |
| Insulator Type | Extra-Long |
| Pre-Gap Size | 0.054 |
| Pre-Gap Size | 1.40 |
| Reach | 0.809 |
| Reach | 20.5 |
| Resistance | 4000 |
| Resistor Type | Yes |
| Seat Type | Tapered |
| Thread Diameter | 14.0 |
| Product line | Double Platinum Spark Plug |
| Fits | Ford, Mazda, and Mercury · 101 vehicles |
Double platinum design. Platinum-to-platinum firing delivers a longer-lasting spark plug.
OE form, fit and function. A direct replacement alternative for standard spark plug service.
Extra-long ceramic insulator. Built for reliable ignition performance and easier starts.
Cross-references Bosch 7407, 41-822 and 444EE for the same application. See all 3.
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Autolite Double Platinum Spark Plug APP5144
Autolite Double Platinum Spark Plug APP5144 is a direct OE-style ignition replacement built for consistent firing, easier starts, and responsive acceleration. With platinum-to-platinum contact and a 0.054 in. pre-gap, it is a practical choice for Ford F-150, Ford Ranger, and other listed applications that call for a tapered-seat platinum plug.
Key Features
- Double platinum design for platinum-to-platinum firing and longer service life
- Pre-gapped at 0.054 in. (1.40 mm) for listed applications
- Platinum center electrode tip and platinum ground electrode tip
- Resistor plug with 4,000 ohm resistance
- Tapered seat, 14 mm thread diameter, 5/8 in. hex
- Extra-long ceramic insulator for stable ignition performance
- OE-style form, fit, and function for many domestic applications
Product Details
The Autolite Double Platinum Spark Plug line is engineered for drivers who want an OE replacement that matches factory-style requirements without changing the ignition system setup. APP5144 uses platinum on both electrodes to help maintain consistent spark performance over time, while the tapered ground electrode and standard center electrode design support reliable combustion. This part number is listed for a wide range of Ford and Mazda applications, including Ford F-150, Ford Ranger, Ford Focus, Ford Freestar, Ford Escort, and Mazda B4000. This part cross-references Bosch 7407 for the same application.
Common Issues This Part Can Address
- Hard starting caused by worn spark plug electrodes
- Rough idle from inconsistent ignition firing
- Slow throttle response during acceleration
- Reduced fuel economy related to degraded spark performance
- Misfire symptoms tied to aged OE-style plugs
Installation Notes and Fitment
Verify the specified gap for your vehicle before installation, since listed applications include both 0.044 in. and 0.054 in. requirements depending on year and model. Fits 2008 Ford F-150, N/A. Fits 2005 Ford F-150, N/A. Fits 1998-2002 Ford F-150, N/A. Fits 2006-2008 Ford Ranger, N/A. Fits 2001-2003 Ford Ranger, N/A. Fits 2007 Ford F-150, N/A. Fits 2003 Ford F-150, N/A. Fits 2006-2007 Ford Freestar, N/A. Fits 2001-2007 Mazda B4000, N/A. Fits 2006 Ford F-150, N/A. Fits 2004 Ford F-150, N/A. Fits 2004 Ford F-150 Heritage, N/A. Fits 2000-2004 Ford Focus, N/A. Fits 2003 Ford E-150, N/A. Fits 2003 Ford E-150 Club Wagon, N/A. Fits 2003 Ford E-250, N/A. Fits 2002 Ford E-150, N/A. Fits 1998-2002 Ford E-150 Econoline, N/A. Fits 1998-2002 Ford E-150 Econoline Club Wagon, N/A. Fits 1998-2002 Ford E-250 Econoline, N/A. Fits 1991-2002 Ford Escort, N/A. Fits 1999 Mercury Tracer, N/A. Fits 1991-1996 Mercury Tracer, N/A. Fits 1997-1998 Mercury Tracer, N/A. Fits 1989-1995 Ford Thunderbird, N/A. Fits 1987-1990 Ford Escort, N/A. Fits 1989-1990 Mercury Cougar, N/A. Fits 1987 Mercury Lynx, N/A. Fits 1983 Mercury Lynx, N/A. Fits 1985-1986 Ford Escort, N/A. Fits 1983 Ford Escort, N/A. Fits 1985-1986 Mercury Lynx, N/A. Fits 1984-1985 Ford Escort, N/A. Fits 1984 Ford Ranger, N/A. Fits 1984 Mercury Lynx, N/A. Fits 1983 Ford Ranger, N/A. Fits 1983 Mercury LN7, N/A.
Quality Assurance
Autolite supplies ignition products to the automotive aftermarket and original equipment manufacturers, and this spark plug is built to OE-style specifications for form, fit, and function across the listed applications.
This part fits 101 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 |
|---|---|---|---|---|---|---|---|
| 2008 | Ford | F-150 | 4.2L | V6 | — | N/A | .054" / 1.4mm OE style Spark Plug; Double Platinum Spark Plug |
| 2008 | Ford | Ranger | 4.0L | V6 | — | N/A | .054" / 1.4mm OE style Spark Plug; Double Platinum Spark Plug |
| 2007 | Ford | F-150 | 4.2L | V6 | — | N/A | OE-style spark plug with 0.044 inch / 1.1mm gap.; Double Platinum Spark Plug |
| 2007 | Ford | Freestar | 3.9L | V6 | — | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Double Platinum Spark Plug |
| 2007 | Ford | Freestar | 4.2L | V6 | — | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Double Platinum Spark Plug |
| 2007 | Ford | Ranger | 4.0L | V6 | — | N/A | .054" / 1.4mm OE style Spark Plug; Double Platinum Spark Plug |
| 2007 | Mazda | B4000 | — | — | — | N/A | .054" / 1.4mm OE style Spark Plug; Double Platinum Spark Plug |
| 2006 | Ford | F-150 | 4.2L | V6 | — | N/A | .052"/1.3mm; OE Style; Double Platinum Spark Plug |
| 2006 | Ford | Freestar | 3.9L | V6 | — | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Double Platinum Spark Plug |
| 2006 | Ford | Freestar | 4.2L | V6 | — | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Double Platinum Spark Plug |
| 2006 | Ford | Ranger | 4.0L | V6 | — | N/A | .054" / 1.4mm OE style Spark Plug; Double Platinum Spark Plug |
| 2006 | Mazda | B4000 | — | — | — | N/A | .054" / 1.4mm OE style Spark Plug; Double Platinum Spark Plug |
| 2005 | Ford | F-150 | 4.2L | V6 | — | N/A | .054" / 1.4mm OE style Spark Plug; Double Platinum Spark Plug |
| 2005 | Mazda | B4000 | — | — | — | N/A | .054" / 1.4mm OE style Spark Plug; Double Platinum Spark Plug |
| 2004 | Ford | F-150 | 4.2L | V6 | GAS | N/A | Double Platinum Spark Plug |
| 2004 | Ford | F-150 Heritage | 4.2L | V6 | — | N/A | .054" / 1.4mm OE style Spark Plug; Double Platinum Spark Plug |
| 2004 | Ford | Focus | 2.0L | L4 | — | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Double Platinum Spark Plug |
| 2004 | Mazda | B4000 | — | — | — | N/A | .054" / 1.4mm OE style Spark Plug; Double Platinum Spark Plug |
| 2003 | Ford | E-150 | 4.2L | V6 | — | N/A | Spark plug gap should be set to 0.044 inch (1.1mm).; Double Platinum Spark Plug |
| 2003 | Ford | E-150 Club Wagon | 4.2L | V6 | — | N/A | Spark plug gap should be set to 0.044 inch (1.1mm).; Double Platinum Spark Plug |
| 2003 | Ford | E-250 | 4.2L | V6 | — | N/A | Spark plug gap should be set to 0.044 inch (1.1mm).; Double Platinum Spark Plug |
| 2003 | Ford | F-150 | 4.2L | V6 | — | N/A | OE-style spark plug with 0.044 inch / 1.1mm gap.; Double Platinum Spark Plug |
| 2003 | Ford | Focus | 2.0L | L4 | — | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Double Platinum Spark Plug |
| 2003 | Ford | Ranger | 4.0L | V6 | — | N/A | .054" / 1.4mm OE style Spark Plug; Double Platinum Spark Plug |
| 2003 | Mazda | B4000 | — | — | — | N/A | .054" / 1.4mm OE style Spark Plug; Double Platinum Spark Plug |
| 2002 | Ford | E-150 | 4.2L | V6 | GAS | N/A | Double Platinum Spark Plug |
| 2002 | Ford | E-150 Econoline | 4.2L | V6 | — | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Double Platinum Spark Plug |
| 2002 | Ford | E-150 Econoline Club Wagon | 4.2L | V6 | — | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Double Platinum Spark Plug |
| 2002 | Ford | E-250 Econoline | 4.2L | V6 | — | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Double Platinum Spark Plug |
| 2002 | Ford | Escort | — | — | — | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Double Platinum Spark Plug |
| 2002 | Ford | F-150 | 4.2L | V6 | — | N/A | .054" / 1.4mm OE style Spark Plug; Double Platinum Spark Plug |
| 2002 | Ford | Focus | — | — | — | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Double Platinum Spark Plug |
| 2002 | Ford | Ranger | 4.0L | V6 | — | N/A | .054" / 1.4mm OE style Spark Plug; Double Platinum Spark Plug |
| 2002 | Mazda | B4000 | — | — | — | N/A | .054" / 1.4mm OE style Spark Plug; Double Platinum Spark Plug |
| 2001 | Ford | E-150 Econoline | 4.2L | V6 | — | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Double Platinum Spark Plug |
| 2001 | Ford | E-150 Econoline Club Wagon | 4.2L | V6 | — | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Double Platinum Spark Plug |
| 2001 | Ford | E-250 Econoline | 4.2L | V6 | — | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Double Platinum Spark Plug |
| 2001 | Ford | Escort | — | — | — | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Double Platinum Spark Plug |
| 2001 | Ford | F-150 | 4.2L | V6 | — | N/A | .054" / 1.4mm OE style Spark Plug; Double Platinum Spark Plug |
| 2001 | Ford | Focus | — | — | — | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Double Platinum Spark Plug |
| 2001 | Ford | Ranger | 4.0L | V6 | — | N/A | .054" / 1.4mm OE style Spark Plug; Double Platinum Spark Plug |
| 2001 | Mazda | B4000 | — | — | — | N/A | .054" / 1.4mm OE style Spark Plug; Double Platinum Spark Plug |
| 2000 | Ford | E-150 Econoline | 4.2L | V6 | — | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Double Platinum Spark Plug |
| 2000 | Ford | E-150 Econoline Club Wagon | 4.2L | V6 | — | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Double Platinum Spark Plug |
| 2000 | Ford | E-250 Econoline | 4.2L | V6 | — | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Double Platinum Spark Plug |
| 2000 | Ford | Escort | — | — | — | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Double Platinum Spark Plug |
| 2000 | Ford | F-150 | 4.2L | V6 | — | N/A | .054" / 1.4mm OE style Spark Plug; Double Platinum Spark Plug |
| 2000 | Ford | Focus | — | — | — | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Double Platinum Spark Plug |
| 1999 | Ford | E-150 Econoline | 4.2L | V6 | — | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Double Platinum Spark Plug |
| 1999 | Ford | E-150 Econoline Club Wagon | 4.2L | V6 | — | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Double Platinum Spark Plug |
| 1999 | Ford | E-250 Econoline | 4.2L | V6 | — | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Double Platinum Spark Plug |
| 1999 | Ford | Escort | — | — | — | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Double Platinum Spark Plug |
| 1999 | Ford | F-150 | 4.2L | V6 | — | N/A | .054" / 1.4mm OE style Spark Plug; Double Platinum Spark Plug |
| 1999 | Mercury | Tracer | — | — | — | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Double Platinum Spark Plug |
| 1998 | Ford | E-150 Econoline | 4.2L | V6 | — | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Double Platinum Spark Plug |
| 1998 | Ford | E-150 Econoline Club Wagon | 4.2L | V6 | — | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Double Platinum Spark Plug |
| 1998 | Ford | E-250 Econoline | 4.2L | V6 | — | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Double Platinum Spark Plug |
| 1998 | Ford | Escort | — | — | — | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Double Platinum Spark Plug |
| 1998 | Ford | F-150 | 4.2L | V6 | — | N/A | .054" / 1.4mm OE style Spark Plug; Double Platinum Spark Plug |
| 1998 | Mercury | Tracer | — | — | — | N/A | Spark plug gap: 0.050 inches (1.3 millimeters); Double Platinum Spark Plug |
| 1997 | Ford | Escort | — | — | — | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Double Platinum Spark Plug |
| 1997 | Mercury | Tracer | — | — | — | N/A | Spark plug gap: 0.050 inches (1.3 millimeters); Double Platinum Spark Plug |
| 1996 | Ford | Escort | 1.9L | L4 | — | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Double Platinum Spark Plug |
| 1996 | Mercury | Tracer | 1.9L | L4 | — | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Double Platinum Spark Plug |
| 1995 | Ford | Escort | 1.9L | L4 | — | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Double Platinum Spark Plug |
| 1995 | Ford | Thunderbird | 3.8L | V6 | — | N/A | .054"/1.4mm; Replaces OE Half Thread Design; Double Platinum Spark Plug |
| 1995 | Mercury | Tracer | 1.9L | L4 | — | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Double Platinum Spark Plug |
| 1994 | Ford | Escort | 1.9L | L4 | — | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Double Platinum Spark Plug |
| 1994 | Ford | Thunderbird | 3.8L | V6 | — | N/A | .054"/1.4mm; Replaces OE Half Thread Design; Double Platinum Spark Plug |
| 1994 | Mercury | Tracer | 1.9L | L4 | — | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Double Platinum Spark Plug |
| 1993 | Ford | Escort | 1.9L | L4 | — | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Double Platinum Spark Plug |
| 1993 | Ford | Thunderbird | 3.8L | V6 | — | N/A | .054"/1.4mm; Replaces OE Half Thread Design; Double Platinum Spark Plug |
| 1993 | Mercury | Tracer | 1.9L | L4 | — | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Double Platinum Spark Plug |
| 1992 | Ford | Escort | 1.9L | L4 | — | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Double Platinum Spark Plug |
| 1992 | Ford | Thunderbird | 3.8L | V6 | — | N/A | .054"/1.4mm; Replaces OE Half Thread Design; Double Platinum Spark Plug |
| 1992 | Mercury | Tracer | 1.9L | L4 | — | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Double Platinum Spark Plug |
| 1991 | Ford | Escort | 1.9L | L4 | — | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Double Platinum Spark Plug |
| 1991 | Ford | Thunderbird | 3.8L | V6 | — | N/A | .054"/1.4mm; Replaces OE Half Thread Design; Double Platinum Spark Plug |
| 1991 | Mercury | Tracer | 1.9L | L4 | — | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Double Platinum Spark Plug |
| 1990 | Ford | Escort | — | — | — | N/A | Spark plug gap should be set to 0.044 inch (1.1mm).; Double Platinum Spark Plug |
| 1990 | Ford | Thunderbird | 3.8L | V6 | — | N/A | .054"/1.4mm; Replaces OE Half Thread Design; Double Platinum Spark Plug |
| 1990 | Mercury | Cougar | 3.8L | V6 | — | N/A | .054"/1.4mm; Replaces OE Half Thread Design; Double Platinum Spark Plug |
| 1989 | Ford | Escort | — | — | — | N/A | Spark plug gap should be set to 0.044 inch (1.1mm).; Double Platinum Spark Plug |
| 1989 | Ford | Thunderbird | 3.8L | V6 | — | N/A | .054"/1.4mm; Replaces OE Half Thread Design; Double Platinum Spark Plug |
| 1989 | Mercury | Cougar | 3.8L | V6 | — | N/A | .054"/1.4mm; Replaces OE Half Thread Design; Double Platinum Spark Plug |
| 1988 | Ford | Escort | — | — | — | N/A | Spark plug gap should be set to 0.044 inch (1.1mm).; Double Platinum Spark Plug |
| 1987 | Ford | Escort | 1.9L | L4 | — | N/A | Spark plug gap should be set to 0.044 inch (1.1mm).; Double Platinum Spark Plug |
| 1987 | Mercury | Lynx | 1.9L | L4 | — | N/A | Spark plug gap should be set to 0.044 inch (1.1mm).; Double Platinum Spark Plug |
| 1986 | Ford | Escort | 1.9L | L4 | — | N/A | Replaces OE Half Thread Design; .044"/1.1mm; Double Platinum Spark Plug |
| 1986 | Mercury | Lynx | 1.9L | L4 | — | N/A | Replaces OE Half Thread Design; .044"/1.1mm; Double Platinum Spark Plug |
| 1985 | Ford | Escort | 1.9L | L4 | — | N/A | Replaces OE Half Thread Design; .044"/1.1mm; Double Platinum Spark Plug |
| 1985 | Ford | Escort | 1.6L | L4 | — | N/A | .044"/1.1mm Replaces OE Half Thread Design; Double Platinum Spark Plug |
| 1985 | Mercury | Lynx | 1.6L | L4 | — | N/A | Replaces OE Half Thread Design; .044"/1.1mm; Double Platinum Spark Plug |
| 1985 | Mercury | Lynx | 1.9L | L4 | — | N/A | Replaces OE Half Thread Design; .044"/1.1mm; Double Platinum Spark Plug |
| 1984 | Ford | Escort | 1.6L | L4 | — | N/A | .044"/1.1mm Replaces OE Half Thread Design; Double Platinum Spark Plug |
| 1984 | Ford | Ranger | 2.3L | L4 | — | N/A | Replaces OE Half Thread Design; .044"/1.1mm; Double Platinum Spark Plug |
| 1984 | Mercury | Lynx | 1.6L | L4 | — | N/A | .044"/1.1mm Replaces OE Half Thread Design; Double Platinum Spark Plug |
| 1983 | Ford | Escort | — | — | — | N/A | Replaces OE Half Thread Design; .044"/1.1mm; Double Platinum Spark Plug |
| 1983 | Ford | Ranger | 2.3L | L4 | — | N/A | From 9/2/82; Replaces OE Half Thread Design; .044"/1.1mm; Double Platinum Spark Plug |
| 1983 | Mercury | LN7 | — | — | — | N/A | Spark plug gap should be set to 0.044 inch (1.1mm).; Double Platinum Spark Plug |
| 1983 | Mercury | Lynx | — | — | — | N/A | Spark plug gap should be set to 0.044 inch (1.1mm).; Double Platinum Spark Plug |
| No rows match your filter. | |||||||
Directly replaces or cross-references 3 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Bosch — 740741-822444EE