Engine Piston Ring Kit – ACDelco (25195066)

Engine Piston Ring Kit is a reciprocating component that seals the combustion chamber. Clearance and surface finish decide whether it seals correctly, so the bore has to be measured before a replacement is chosen.

Replace the Piston Ring Kit when a leak-down test shows air escaping past the rings, when the skirt is scuffed, or when ring lands are cracked. Check the ring end gap in the bore it will run in.

This Piston Ring Kit is listed as part 25195066 (Pistons, Rings & Cylinders). Where a number has been superseded, the current reference is the one that ships, so check any supersession note before ordering.

Genuine ACDELCO supplied for this Piston Ring Kit, with the engineering number unchanged from the factory reference stamped on the original.

This is sold as a kit; if only one component has failed, confirm whether the single part is available separately.