Passenger Side Piston – GM (12692001)

Passenger Side Piston contains combustion in the cylinder bore and transfers force to the connecting rod. It is matched by bore diameter and ring groove width rather than by model year alone.

Replace the Passenger Side Piston when compression is low on one cylinder, when oil consumption climbs without an external leak, or when a teardown shows scoring in the bore. Measure the bore before ordering: standard size will not seal a cylinder that needs honing.

For this Passenger Side Piston the reference is 12692001, in our Pistons, Rings & Cylinders range. Compare it with the number on the part you are replacing rather than with a photograph.

This is genuine GM stock, supplied for the Passenger Side Piston with the manufacturer number intact so the reference on the box matches the catalogue.

Position matters here: this is the passenger (right-hand) unit, and fitting it to the other side will not work.