COMP Cams Positive Stop Valve Stem Seal - 5/16 in Valve Stem - 0.530 in Guide - Steel Body / Viton - Set of 16 516-16 29063R How to Rebuild 4

How to Rebuild 4

Like the original Protect-A-Boots product

34 in Long Back

Sport-Comp Elite

COMP Cams Positive Stop Valve Stem Seal - 5/16 in Valve Stem - 0.530 in Guide - Steel Body / Viton - Set of 16 516-16 29063R How to Rebuild 4Providing the best sealing properties and spring clearance, Viton valve seals are an excellent choice in performance applications. The 516 seals have a . 675" OD and fit applications with 5 16" valves and . 530" OD guides. The COMP Cams philosophy has never changed: make the highest performing products possible and lead the industry in technological development. One thing COMP Cams has never forgotten: Performance is defined by what happens out on the