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This COMP Cams adjusting nut is a replacement for the nut that accompanies adjustable Ultra Pro Magnum rocker arms designed for GM LS1/LS2/LS6 and LS3 engines. Sized for 3/8" studs, it restores adjustability and locking for those specific COMP Cams rocker arm assemblies, providing a direct-fit service part for LS-series valve trains using the Ultra Pro Magnum hardware.
COMP Cams Adjusting Nut GM LS1 3/8
