Engine Valve Stem Oil Seal

COMP's Positive Stop PTFE valve seals offer more clearance for dual springs with better sealing than o-ring or umbrella seals....

COMP Cams Part #: BDQQ_503-1

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Engine Valve Stem Oil Seal

COMP's Positive Stop PTFE valve seals offer more clearance for dual springs with better sealing than o-ring or umbrella seals. This 503 seal has a .630" outer diameter and fits applications with 11/32" valves and .530" OD valve guides.

BBK

Dyno Racing

Nitro Performance

Top Gear Tuning