COMP Cams · New
COMP Cams Valve Seals 11/32in Stem
MPN 506-16 · Store SKU cca506-16
Supplier stock checked 11/8/2026, 6:58:12 AM UTC. Adding a part does not reserve it.
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Product details
COMP Cams offers a complete line of valve stem Seals, from the stock GM "O-Ring" to the positive-stop PTFE Seal. These Seals are a must to keep unwanted oil from entering the combustion chamber through the clearance in the valve guides. The "O-Ring" Seals use the standard retainer and oil splash shield. The umbrella Seal is normally used when a larger-than-stock diameter spring is used, in the case of a double spring, the positive-stop PTFE Seal is used. We also have a smaller diameter Viton Seal available for triple spring Applications. Providing the best sealing properties and spring clearance, viton valve seals are an excellent choice in performance applications. The 506 seals have a .610" OD and fit applications with 11/32" valves and .494" OD guides. Set of 16 Black Viton Valve Seals for .494" Guide Size, 11/32" Valve Stem
Manufacturer fitment & guides
- Engines w/ 0.494" OD Valve Guides and 11/32" Valve Stems
- Manufacturer-supplied application summary from Turn14; this may not be an exhaustive fitment list.
Part-specific notes
- California Proposition 65: Y