Details

• Brand:

  

  

• SKU:

  SP-488-AX

• Description:

  This is a genuine Ford Motorcraft spark plug, catalogued as a copper-core resistor spark plug and identified in Ford references as Model 18 of the CJ series. The plug threads into the cylinder head and delivers the spark that ignites the air-fuel mixture in the combustion chamber, firing each cylinder at the correct moment to produce smooth power and clean combustion. The resistor construction suppresses radio-frequency interference, while the copper-core center electrode promotes consistent heat transfer for reliable ignition across the operating range. Owners replace spark plugs as part of routine tune-up maintenance, and sooner when they notice rough idle, misfires, hesitation under acceleration, hard starting, or a drop in fuel economy, all of which point to worn or fouled plugs. A plug with an eroded gap or fouled tip cannot maintain a strong spark, so timely replacement restores proper engine operation and emissions performance. Manufactured to Ford Motorcraft specifications, the plug provides the correct reach, heat range, and gap for the application and installs in the factory plug location. Always gap-check against the engine specification before installation, seat the plug to the proper torque, and confirm this part matches the spark plug callout for the engine, as Motorcraft uses distinct plug numbers across its gas engine families.

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