Valve Stem Seal 3/8" x .500" PIOS-1050

Valve Stem Seal 3/8" x .500" OS-1050 PIOS-1050 Rubber/Teflon VALVE STEM SEAL RUBBER/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