COMP Cams Valve Seals Metal Body Viton 517-12

Providing the best sealing properties and spring clearance, viton valve seals are an excellent choice in performance applications. The 517 seals have a .545" OD and fit applications with 11/32" valves and .500" OD guides. Available individually under 517-1, in a set of 8 under 517-8, in a set of 16 under 517-16 Engines w/ 0.500" OD Valve Guides and 11/32" Valve Stems