Details

• Brand:

  

  

• SKU:

  JR3Z-6571-A

• Other Names:

  Valve Seals, Seal Valve Stem

• Description:

  This is the genuine Ford valve stem seal, cataloged by Ford under the valve-seal group, and it seals each valve stem where it passes through the cylinder head to control oil migration into the combustion chamber and intake or exhaust ports. It rides on the valve guide and wipes the stem so that only a metered film of oil reaches the valve, preventing oil consumption and smoke while keeping the guide lubricated. It fits Mustang applications with the 5.0L V8 and shares the 6571 base with the related engineering-level seal used across the platform. Owners and builders seek this seal when the engine burns oil, when blue smoke appears on start-up or deceleration, when oil fouls the spark plugs, or when a valve-seal replacement is performed during a head or valvetrain service. Hardened or cracked seals let oil past the guides and raise consumption, so fresh factory seals restore proper oil control. As a Ford OEM component the seal matches the original material, dimensions, and guide fit for correct sealing and durability. Confirm the engine and application against the original before ordering. Installing the correct valve stem seals returns proper oil control at the valves, reduces oil consumption and smoke from worn seals, and supports a clean-running engine, all with genuine Ford fit and quality.

• Applications: 5.0L. 5.2L.
• Replaces:

  kr3z6571a

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