Providing the best sealing properties and spring clearance, viton valve seals are an excellent choice in performance applications. The 521 seals have a .545" OD and fit applications with 3/8" valves and .500" OD guides.
PTFE; Seal; Valve Guide; Valve Guide Seal; Valve Stem Seal; Valve Seals; 5/16" Valve Seals; 11/32" Valve Seals; .530" Valve Seal; Umbrella; O-Ring Seals; Viton Seals; 8 mm Seals
Available individually under 521-1, in a set of 8 under 521-8, in a set of 16 under 521-16
Set of 12 Metal Body Viton Valve Seals for .500" Guide Size, 3/8" Valve Stem
Engines w/ 0.500" OD Valve Guides and 3/8" Valve Stems
COMP Cams Valve Seals 3/8 Viton Metal B
12 Viton Seals .500" Guide, 3/8" Valve
Engine Valve Stem Oil Seal Set
Valve Stem Oil Seal
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