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This pack contains sixteen pairs of COMP Cams four-groove hardened steel valve locks for 3/8" stems, intended for Chrysler-style street rebuilds where lighter valve spring loads apply. The street locks position the retainer and spring until the retainer taper nests and produces the collet effect that secures the assembly. Always verify a small gap between the two halves when positioned on the stem to confirm correct sizing.
COMP Cams Valve Locks 3/8in Four Groove
