Engine Crankshaft – GM (12641692)

Engine Crankshaft is a rotating or reciprocating member in the valvetrain or bottom end. It is ground to a specific journal size and, in the case of a camshaft, to a specific lift and duration profile.

Replace the Engine Crankshaft when you find scoring on a journal, when the lobe or bearing surface is worn below specification, or when the engine is apart for another failure. Measure the journals before ordering, because undersize parts exist.

For this Engine Crankshaft the reference is 12641692, in our Crankshafts & Bearings range. Compare it with the number on the part you are replacing rather than with a photograph.

Genuine GM part for the Engine Crankshaft. Where the manufacturer has superseded a number, the current reference is the one that ships.