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

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COMP Cams Valve Seal, Metal Viton, .500 in. Guide Size, 3/8 Valve Stem, Set of 16

COMP Cams Valve Seal, Metal Viton, .500 in. Guide Size, 3/8 Valve Stem, Set of 16

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MANLEY Valve Stem Seal, 5/16 in. Stem, .420 in. Guide OD, Set of 8

MANLEY Valve Stem Seal, 5/16 in. Stem, .420 in. Guide OD, Set of 8

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COMP Cams Valve Seal, Metal Viton, .530 in. Guide Size, 3/8 Valve Stem, Set of 8

COMP Cams Valve Seal, Metal Viton, .530 in. Guide Size, 3/8 Valve Stem, Set of 8

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MANLEY Valve Stem Seal, 3/8 in. Stem, .500 in. Guide OD, Each

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COMP Cams Valve Seal, Positive Stop PTFE, For Ford 5.0 Coyote, Each

COMP Cams Valve Seal, Positive Stop PTFE, For Ford 5.0 Coyote, Each

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