Details

• Brand:

  

  

• SKU:

  2X4Z-6A666-AA

• Other Names:

  Valve Assembly, ev257

• Description:

  This is the genuine Ford PCV valve, the Motorcraft EV-257 positive crankcase ventilation valve, used across a broad range of Ford and Lincoln-Mercury vehicles including Explorer, Fusion, Mustang, Continental, MKS, MKX, Grand Marquis, Milan and Sable, with the valve typically located in the passenger-side valve cover. The PCV valve meters crankcase blow-by vapors back into the intake to be burned, while its one-way action controls flow with engine vacuum and prevents reverse flow. A stuck-open, stuck-closed or clogged PCV valve is a common and inexpensive cause of rough idle, hesitation, oil consumption, oil leaks from pushed-out seals and gaskets, a whistling vacuum noise, or an illuminated check-engine light. Replacing the valve at the recommended interval restores proper crankcase ventilation, protects gaskets and seals from pressure buildup, and helps maintain a clean, stable idle. For a proper repair, make sure the valve seats fully and that the connecting hose or grommet is supple and sealing, since a cracked PCV hose produces the same symptoms as a bad valve. Inspect the grommet and replace it if it is hardened. Confirm your engine and application against the VIN before ordering, as PCV valve calibration is matched to the specific engine. Genuine Ford and Motorcraft construction ensures the valve matches the original flow calibration and fit for correct emissions and idle behavior.

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