Details

• Brand:

  

  

• SKU:

  EC-791

• Other Names:

  Motorcraft™ Filler Cap, Motorcraft™ Cap, Cap Assembly Oil Filler

• Description:

  This is the genuine Motorcraft engine oil filler cap, cataloged by Ford as the Engine Oil Filler Cap. It seals the oil fill opening on the valve cover, keeping engine oil contained while allowing the positive crankcase ventilation system to regulate internal pressure and block dirt and moisture from entering the engine through the fill neck. This is a widely shared late-model Motorcraft service cap used across a broad range of Ford and Lincoln vehicles from roughly 2015 through 2025, spanning multiple gasoline engine families, which is why it is cataloged as a common multi-vehicle component rather than a single-model part. A cracked cap body, a hardened or torn sealing ring, or worn locking tabs allow oil vapor to escape and unmetered air to enter, which typically shows up as oil residue and mist around the fill neck, an oil odor, a rough or fluctuating idle from a ventilation leak, a stored engine trouble code, or a cap that will not click and lock. Installing a fresh genuine cap restores a proper crankcase seal and correct ventilation behavior. Because the integrated sealing element stiffens with heat and age, replacing a worn cap with the correct Motorcraft part ensures a clean, secure seal. Verify the cap interface matches the valve cover fill neck on the specific engine, then seat and turn the cap until it locks fully so the seal compresses evenly.

• Notes: Included with oil filler tube.

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