5/16 Viton Valve Seals (8pk)

The MANLEY 5/16 Viton Valve Seals 8-pack is a crucial component for high-performance engine rebuilds, particularly where OEM seals may not provide the necessary durability. These precision-engineered valve seals are designed to prevent oil from leaking past the valve stem into the combustion chamber, ensuring proper lubrication and reducing oil consumption.

Manufactured from Viton fluoroelastomer material, these seals offer excellent chemical resistance and thermal stability, making them suitable for modern engine environments. The seals are designed to maintain their elasticity across a wide temperature range, which is essential for consistent sealing performance under varying conditions.

This 8-piece kit is sufficient for a complete four-cylinder head and can be used effectively on both intake and exhaust valve stems. The tight tolerances ensure compatibility with aftermarket valve guides and OEM applications, making them a reliable choice for mechanics engaged in head work or full engine rebuilds.