Details

• Brand:

  

  

• SKU:

  AGSF-52C-X

• Other Names:

  sp442x

• Description:

  This is a genuine Motorcraft spark plug, Ford's own OEM ignition brand, catalogued as AGSF-52C-X and cross-referenced to the Motorcraft SP-442-X service number. A spark plug threads into the cylinder head and delivers the high-voltage arc that ignites the compressed air and fuel charge in the combustion chamber on each power stroke, so healthy plugs are essential to smooth running, easy starting, fuel economy, and clean emissions. This is a conventional copper-core plug used as a factory service replacement across a wide range of Ford, Lincoln, and Mercury engines, and it supersedes and replaces the earlier AGSF-52C, AGSF-52C-A, AGSF-52CF4, AWSF-52CF4, AWSF-52CF6, and related service numbers. As a plug wears the center and ground electrodes erode and the gap widens, which shows up to the driver as a rough or unstable idle, hesitation or stumble under acceleration, hard cold starts, a misfire code, reduced power, and worsening fuel mileage. Fitting fresh factory-correct plugs restores a strong, consistent spark and even cylinder-to-cylinder firing. Always gap and torque the plug to the engine's published specification and verify the correct application for your specific engine before installation, since ignition components are engine-specific. This copper-core design is the correct original-equipment plug for the engines that call for it and provides reliable, consistent ignition performance.

• Replaces:

  agsf52c, agsf52ca, agsf52cf4, awsf52cf4, awsf52cf6, sp442, sp442a

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