Description
The Motorcraft Spark Plug SP504X (AGSF34FMX) is engineered to meet strict Ford engineering standards for performance, durability, and long service life. Designed to help maintain peak engine performance throughout its service interval, this spark plug supports efficient combustion, helps reduce misfires, improves fuel economy, and supports proper emissions performance.
Motorcraft spark plugs are matched to specific engine applications to provide dependable ignition performance across a wide range of domestic and import vehicles. Built with high-quality materials, the SP504X is a reliable OEM-style replacement spark plug for maintaining long-term engine efficiency and consistent operation.
With a typical service interval of 60,000 to 100,000 miles, the SP504X is designed for durability and confidence in daily driving and work applications where proper fitment and dependable spark delivery are essential.
Features
- Motorcraft spark plug part number SP504X
- Plug number AGSF34FMX
- Meets Ford engineering standards for quality and performance
- Designed to help maintain peak engine performance over extended service intervals
- Typical service life of 60,000 to 100,000 miles
- Helps reduce misfires and support fuel efficiency
- Supports proper emissions performance
- Engine-specific design for reliable fit and function
- Built with high-quality materials for dependable long-term durability
- Suitable for a wide range of gasoline engine applications
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Brand: Motorcraft
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Dimensions: 1.00 L x 1.00 W x 3.38 H in
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Weight: 0.10 lb
Fitment
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Ford E-150: 2003 – V6 4.2L
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Ford E-150 Club Wagon: 2003 – V6 4.2L
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Ford E-150 Econoline: 1998–2002 – V6 4.2L
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Ford E-150 Econoline Club Wagon: 1998–2002 – V6 4.2L
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Ford E-250: 2003 – V6 4.2L
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Ford E-250 Econoline: 1998–2002 – V6 4.2L
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Ford EXP: 1987–1988 – L4 1.9L TBI
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Ford Escort: 1987–1990 – L4 1.9L TBI; 1991–1996 – L4 1.9L; 1997–2002 – SOHC L4 2.0L
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Ford F-150: 1998–2008 – V6 4.2L
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Ford F-150 Heritage: 2004 – V6 4.2L
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Ford Focus: 2000–2004 – SOHC L4 2.0L
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Ford Thunderbird: 1989–1995 – Supercharged V6 3.8L / Super Coupe V6 3.8L
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Lincoln Mark LT: 2005–2008 – 4.2L Gas
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Mercury Cougar: 1989–1990 – Supercharged V6 3.8L / V6 3.8L
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Mercury Lynx: 1987 – L4 1.9L TBI
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Mercury Tracer: 1991–1996 – L4 1.9L; 1997–1999 – L4 2.0L