Crankshaft Pulley – ACDelco (25190821)

Crankshaft Pulley is a toothed component that transfers drive through a set ratio. Tooth count, pressure angle and hub offset are what make one gear interchangeable and another not.

Replace the Crankshaft Pulley when you find chipped or spalled teeth, when the pattern shows contact concentrated at one end, or when the transmission is apart for another failure. Inspect the mating gear before refitting.

The Crankshaft Pulley in this listing carries part number 25190821 and sits in the Crankshafts & Bearings category. The number stamped on the original part is the only reliable cross-reference.

This is genuine ACDELCO stock, supplied for the Crankshaft Pulley with the manufacturer number intact so the reference on the box matches the catalogue.