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COMP Cams 3/8" umbrella valve seal is designed for 3/8" valve stems with OE‑size guides (.900" OD) and prevents oil entry past the valve guide clearance. Normally used when a larger‑than‑stock diameter spring is fitted, the umbrella seal typically requires no machining and serves as a convenient replacement for stock guide applications that need a reliable, no‑machining seal option.
COMP Cams Valve Seal 3/8in UmBRella
