COMP Cams Valve Stem Seals - 5/16 Viton 10000103 open-end lug nuts are designed

open-end lug nuts are designed to fit most racing wheel applications and will not pull through the wheel

1979-1990 GMC C2500

3/4 in Hole

438 in Thick

Oil pan fits pre-’86 blocks with 2-pc rear main seal

COMP Cams Valve Stem Seals - 5/16 Viton 10000103 open-end lug nuts are designedProviding 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