Providing the best sealing properties and spring clearance, viton valve seals are an excellent choice in performance applications. The 518 seals have a .575" OD and fit applications with 11/32" valves and .530" OD guides.
Available individually under 518-1, in a set of 12 under 518-12, in a set of 16 under 518-16
Engines w/ 0.530" OD Valve Guides and 11/32" Valve Stems
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