Providing the best sealing properties and spring clearance, viton valve seals are an excellent choice in performance applications. The 521 seal has a .545" OD and fits applications with 3/8" valves and .500" OD guides.
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Tags: CaseLotQuantity:1 , ClearanceItem:N , comp-cams , Core:N , CorePrice:0 , Engine Components>Valve Seals , EPA:N/A , LTL:N , MPN:521-1 , Non-CARB:N , Prop65:Y , SpecialOrder:Y , under-100 , UniversalFitment:Y , valve-seals
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