Providing the best sealing properties and spring clearance, viton valve seals are an excellent choice in performance applications. The 516 seal has a .675" OD and fits applications with 5/16" valves and .530" OD guides.
Available in a set of 8 under 516-8, available in a set of 12 under 516-12, available in a set of 16 under 516-16
Engines w/ 0.530" OD Valve Guides and 5/16" Valve Stems
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