Ferrea 5/16 / 8mm .500in ID Viton Hi-Temp Exhaust/Intake Valve Stem Seal - Single (Drop Ship Only)

This Ferrea valve stem seal features a .500 inch inside diameter, designed to fit both 5/16 inch and 8mm valve stems. It's constructed from Viton, a high-temperature resistant material that holds up well in the demanding environment of an engine's exhaust and intake ports. Using the correct valve stem seal is crucial for preventing oil from entering the combustion chamber, which can lead to blue smoke, increased oil consumption, and fouled spark plugs.

The Viton material is known for its excellent resistance to heat and oil, making it a solid choice for engines that run hot or consume oil. This particular seal is a single unit, intended for replacement of individual worn-out seals. When rebuilding an engine or performing valve work, replacing these seals is a common and important step to ensure proper engine operation and longevity.