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COMP Cams part 4631-8 High Energy aluminum polylocks are specified for 3/8" stud diameter applications. These polylocks deliver the matched fit and 1.125" height intended for COMP Cams 3/8" die-cast aluminum roller rocker arms, making them the correct replacement when that part number or stud size is required for moderate lift and spring pressure assemblies.
COMP Cams Poly Lock 3/8 High Energy Alu
