Providing the best sealing properties and spring clearance, viton valve seals are an excellent choice in performance applications. The 516 seals have a .675" OD and fit applications with 5/16" valves and .530" OD guides.
Available individually under 516-1, in a set of 8 under 516-8, in a set of 16 under 516-16
Engines w/ 0.530" OD Valve Guides and 5/16" Valve Stems
