Engine Valve Stem Oil Seal

viton valve seals are an excellent choice in performance applications. The 520 seal has a .575" OD and fits applications...

COMP Cams Part #: BDQQ_520-1

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Engine Valve Stem Oil Seal

viton valve seals are an excellent choice in performance applications. The 520 seal has a .575" OD and fits applications with 5/16" valves and .530" OD guides.

BBK

Dyno Racing

Nitro Performance

Top Gear Tuning