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OE Quality
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AutolitePart #: 5143
Autolite 5143 Spark Plug
38 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
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OE Direct Replacement — Bolt-on fit, no modifications needed
Copper Resistor Spark Plug
Fitment: Ford, Land Rover, Mazda, and Mercury, B4000, Escort, Explorer, Explorer Sport Trac, LR3, Lynx, Mountaineer, Mustang, and Ranger
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Autolite 5143 Spark Plug
| Brand | Autolite |
|---|---|
| Part Number | 5143 |
| Position | Copper Resistor Spark Plug |
| Resistance | 4000 |
| Ground Electrode Tip Design | Tapered |
| Ground Electrode Core Material | Nickel |
| Electrical Terminal Type | Stud |
| Center Electrode Core Material | Copper |
| Center Electrode Tip Material | Nickel |
| Pre-Gap Size | 0.054 |
| Pre-Gap Size | 1.40 |
| Ground Electrode Quantity | 1 |
| Hex Size | 16 |
| Hex Size | 5/8" |
| Seat Type | Tapered |
| Reach | 0.809 |
| Reach | 20.5 |
| Thread Diameter | 14.0 |
| Resistor Type | Yes |
| Center Electrode Design | Standard / regular |
| Ground Electrode Tip Material | Nickel |
| Insulator Material | Ceramic |
| Insulator Type | Extra-long |
This part fits 38 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2011 | Ford | Ranger | 4.0L | V6 | N/A | .054" / 1.4mm OE style Spark Plug; Copper Resistor Spark Plug |
| 2010 | Ford | Explorer | 4.0L | V6 | N/A | .054" / 1.4mm OE style Spark Plug; Copper Resistor Spark Plug |
| 2010 | Ford | Explorer Sport Trac | 4.0L | V6 | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Copper Resistor Spark Plug |
| 2010 | Ford | Mustang | 4.0L | V6 | N/A | .054" / 1.4mm OE style Spark Plug; Copper Resistor Spark Plug |
| 2010 | Ford | Ranger | 4.0L | V6 | N/A | .054" / 1.4mm OE style Spark Plug; Copper Resistor Spark Plug |
| 2010 | Mazda | B4000 | N/A | .053"/1.3mm; Copper Resistor Spark Plug | ||
| 2010 | Mercury | Mountaineer | 4.0L | V6 | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Copper Resistor Spark Plug |
| 2009 | Ford | Explorer | 4.0L | V6 | N/A | .054" / 1.4mm OE style Spark Plug; Copper Resistor Spark Plug |
| 2009 | Ford | Explorer Sport Trac | 4.0L | V6 | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Copper Resistor Spark Plug |
| 2009 | Ford | Mustang | 4.0L | V6 | N/A | .054" / 1.4mm OE style Spark Plug; Copper Resistor Spark Plug |
| 2009 | Ford | Ranger | 4.0L | V6 | N/A | .054" / 1.4mm OE style Spark Plug; Copper Resistor Spark Plug |
| 2009 | Mazda | B4000 | N/A | .053"/1.3mm; Copper Resistor Spark Plug | ||
| 2009 | Mercury | Mountaineer | 4.0L | V6 | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Copper Resistor Spark Plug |
| 2008 | Ford | Explorer | 4.0L | V6 | N/A | .054" / 1.4mm OE style Spark Plug; Copper Resistor Spark Plug |
| 2008 | Ford | Explorer Sport Trac | 4.0L | V6 | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Copper Resistor Spark Plug |
| 2008 | Ford | Mustang | 4.0L | V6 | N/A | .054" / 1.4mm OE style Spark Plug; Copper Resistor Spark Plug |
| 2008 | Land Rover | LR3 | 4.0L | V6 | N/A | Spark plug gap is 0.040 inches or 1.0 millimeters.; Copper Resistor Spark Plug |
| 2008 | Mazda | B4000 | N/A | .053"/1.3mm; Copper Resistor Spark Plug | ||
| 2008 | Mercury | Mountaineer | 4.0L | V6 | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Copper Resistor Spark Plug |
| 2007 | Ford | Explorer | 4.0L | V6 | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Copper Resistor Spark Plug |
| 2007 | Ford | Explorer Sport Trac | 4.0L | V6 | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Copper Resistor Spark Plug |
| 2007 | Ford | Mustang | 4.0L | V6 | N/A | .054" / 1.4mm OE style Spark Plug; Copper Resistor Spark Plug |
| 2007 | Land Rover | LR3 | 4.0L | V6 | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Copper Resistor Spark Plug |
| 2007 | Mercury | Mountaineer | 4.0L | V6 | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Copper Resistor Spark Plug |
| 2006 | Ford | Explorer | 4.0L | V6 | N/A | .054" / 1.4mm OE style Spark Plug; Copper Resistor Spark Plug |
| 2006 | Ford | Mustang | 4.0L | V6 | N/A | .054" / 1.4mm OE style Spark Plug; Copper Resistor Spark Plug |
| 2006 | Land Rover | LR3 | 4.0L | V6 | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Copper Resistor Spark Plug |
| 2006 | Mercury | Mountaineer | 4.0L | V6 | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Copper Resistor Spark Plug |
| 2005 | Ford | Explorer | 4.0L | V6 | N/A | From 7/19/05; .054"/1.4mm; OE Style; Copper Resistor Spark Plug |
| 2005 | Ford | Mustang | 4.0L | V6 | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Copper Resistor Spark Plug |
| 2005 | Ford | Ranger | 4.0L | V6 | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Copper Resistor Spark Plug |
| 2005 | Land Rover | LR3 | 4.0L | V6 | N/A | .054" / 1.4mm OE style Spark Plug; Copper Resistor Spark Plug |
| 2004 | Ford | Ranger | 4.0L | V6 | N/A | Spark plug gap: .054 inches or 1.4 millimeters; Copper Resistor Spark Plug |
| 1990 | Ford | Escort | N/A | OE-style spark plug with 0.044 inch / 1.1mm gap.; Copper Resistor Spark Plug | ||
| 1989 | Ford | Escort | N/A | OE-style spark plug with 0.044 inch / 1.1mm gap.; Copper Resistor Spark Plug | ||
| 1988 | Ford | Escort | N/A | OE-style spark plug with 0.044 inch / 1.1mm gap.; Copper Resistor Spark Plug | ||
| 1987 | Ford | Escort | 1.9L | L4 | N/A | OE-style spark plug with 0.044 inch / 1.1mm gap.; Copper Resistor Spark Plug |
| 1987 | Mercury | Lynx | 1.9L | L4 | N/A | OE-style spark plug with 0.044 inch / 1.1mm gap.; Copper Resistor Spark Plug |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
4037060AGSF24C
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.