Details

• Brand:

  

  

• SKU:

  EL3Z-6766-A

• Other Names:

  Filler Cap, Engine Oil Filler Cap, Cap Assembly Oil Filler, EC789

• Description:

  This is the genuine Ford engine oil filler cap, cataloged as Cap Assembly - Oil Filler, that twists onto the valve cover oil fill neck to seal the top of the engine and maintain proper crankcase pressure. The cap carries an integrated gasket and a positive-locking feature so it holds a clean seal against oil vapor and keeps contaminants out of the valvetrain. A cracked, worn, or missing cap lets oil mist escape around the fill neck, allows unmetered air into the crankcase ventilation circuit, and can trigger a rough idle, an oil smell, or oil residue on top of the engine; a hardened or torn cap gasket produces the same leak symptoms. This part covers a broad range of Ford and Lincoln applications built from 2011 onward, including F-150 with the 3.5L V6, Expedition and Explorer with the 3.5L V6, E-Series vans with the 5.4L V8 and 6.8L V10, and F-250 F-350 F-450 Super Duty with the 6.2L V8 and 6.8L V10, so it serves as a common replacement across the modular and EcoBoost engine families. It is a direct-fit factory replacement that restores the original seal and appearance. Install it hand-tight to the factory detent so the gasket seats evenly without distorting, and do not over-torque. Always confirm the fill-neck style on your engine matches before fitting to guarantee a correct seal.

• Notes: Included with oil filler tube.
• Replaces:

  BL3Z6766A

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