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COMP Cams Valve Seals 3/8 Viton Metal Body

COMP Cams · New

COMP Cams Valve Seals 3/8 Viton Metal Body

MPN 521-8 · Store SKU cca521-8

$20.95
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Supplier stock checked 11/7/2026, 4:49:58 PM UTC. Adding a part does not reserve it.

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Product details

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. Set of 8 Metal Body Viton Valve Seals for .500" Guide Size, 3/8" Valve Stem 3/8 X .500 Viton Metal Body Seal .540 OD

Manufacturer fitment & guides

  • Engines w/ 0.500" OD Valve Guides and 3/8" Valve Stems
  • Manufacturer-supplied application summary from Turn14; this may not be an exhaustive fitment list.

Part-specific notes

  • California Proposition 65: Y

Manufacturer documents

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