Our LS valve stem seals are designed for stock powdered metal and bronze guides.

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MANLEY Valve Stem Seal, 5/16 in. Stem, .500 in. Guide OD, Set of 16

MANLEY Valve Stem Seal, 5/16 in. Stem, .500 in. Guide OD, Set of 16

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COMP Cams Valve Seal, O-Ring, Stock Guide Size, 11/32 in. Valve Stem, Set of 16

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COMP Cams Valve Seal, PTFE, .500 in. Guide Size, 5/16 in. Valve Stem, Each

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Crow Cams LS TOP HAT SEAL VITON EXH SET

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COMP Cams Valve Seal, Metal Body Viton, .530 in. Guide Size, 11/32 in. Valve Stem, Set of 8

COMP Cams Valve Seal, Metal Body Viton, .530 in. Guide Size, 11/32 in. Valve Stem, Set of 8

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