Providing the best sealing properties and spring clearance, viton valve seals are an excellent choice in performance applications. The 522 seal has a .575" OD and fits applications with 3/8" valves and .530" OD guides.
Available in a set of 8 under 522-8, available in a set of 12 under 522-12, available in a set of 16 under 522-16
Engines w/ 0.530" OD Valve Guides and 3/8" Valve Stems
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