COMP Cams Valve Stem Seals - 5/16 Viton 10000103 quicker socket releases and resistance

quicker socket releases and resistance to jamming

1979-1990 GMC C2500

Lower support and cup rest directly on the shock rod end

10-1/2 x 12 in Legs

COMP Cams Valve Stem Seals - 5/16 Viton 10000103 quicker socket releases and resistanceProviding the best sealing properties and spring clearance, Viton valve seals are an excellent choice in performance applications. These 530 seals have a . 565" OD and fits applications with 5 16" valves and . 425" 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