Pioneer Teflon® valve stem oil seals for SB Chevy with .343" Stem Diameter and .500" Guide.
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 valve guide. Packaged 16 per card.
May require maching of the valve guide to ensure a proper fit, installer must match valve stem oil seal to appropriate valve stem and valve guide diameters. Necessary for most Dual valve spring applications.
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