COMP Cams · New

COMP Cams Valve Seal Viton GM LS1 .313

Name: COMP Cams Valve Seal Viton GM LS1 .313
Brand: COMP Cams
SKU: cca511-16
Price: 43.95 USD

MPN 511-16 · Store SKU cca511-16

$43.95

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Supplier stock checked 11/8/2026, 2:01:47 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 511 seals have a .600" OD and fit LS applications with 8mm valves and .500" OD guides. Set of 16 Steel Viton Valve Seals for .500" Guide Size, 8mm Valve Stem

Manufacturer fitment & guides

Engines w/ 0.500" OD Valve Guides and 8 mm 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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