Providing the best sealing properties and spring clearance, viton valve seals are an excellent choice in performance applications. The 517 seal has a .545" OD and fits applications with 11/32" valves and .500" OD guides.
Available in a set of 8 under 517-8, available in a set of 12 under 517-12, available in a set of 16 under 517-16
Engines w/ 0.500" OD Valve Guides and 11/32" Valve Stems
