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Crankshaft - Forged Steel, Late-Style ZZ4

Brand: Chevrolet Performance

Part Number: 12556307


The product's part number has been discontinued.

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Small Block Crankshafts

A crankshaft is that massive piece of convoluted steel that holds the whole engine together. An engine is essentially a pump, and without a strong crankshaft, the pump won’t work. Chevrolet Performance puts the same top-quality engineering and manufacturing processes into its crankshafts as it does all its parts. These crankshafts are the same ones used in Chevrolet Performance crate engines. The crankshafts are available in cast-iron and forged steel. Forged crankshafts should be used for higher-horsepower applications.

Forged Steel Crankshaft - Late Style ZZ4

  • Forged 1053 steel crankshaft used in post-November 1998 ZZ4 engines.
  • Replaces all cast or steel ZZ4 crankshafts

Notes:  Must be used with connecting rod P/N 10108688 and piston P/N 10159436.