Providing the best sealing properties and spring clearance, viton valve seals are an excellent choice in performance applications. These 530 seals have a .565" OD and fits applications with 5/16" valves and .425" OD guides.
Available individually under 530-1, available in a set of 8 under 530-8
Engines w/ 0.425" OD Valve Guides and 5/16" Valve Stems
