Valve Stem Seals 3/8" x .531" PIOS-1067

Valve Stem Seals 3/8" x .531" OS-1067 PIOS-1067 Teflon VALVE STEM SEAL TEFLON All Teflon seal with spring loaded wiper

Prevents unwanted oil from contaminating the cylinder, which can cause loss of power

Makes engine tune-ups easier and provides smoother engine idle by stopping leakage of air through the intake vlave guide