Providing the best sealing properties and spring clearance, viton valve seals are an excellent choice in performance applications. The 522 seals have a .575" OD and fit applications with 3/8" valves and .530" OD guides.
Available individually under 522-1, in a set of 12 under 522-12, in a set of 16 under 522-16
Engines w/ 0.530" OD Valve Guides and 3/8" Valve Stems
