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The Moroso crank pulley shim kit for Chevrolet big block and small block applications includes three shims to fine-tune pulley spacing. Supplied as a three-pack, these shims let mechanics adjust crank pulley offset during accessory drive alignment, helping correct belt tracking and eliminate minor misalignment without major component changes on Chevy V8 front accessory systems.
Moroso Chevrolet Big Block/Small Block Crank Pulley Shim Kit - 3 Pack
