Engine Piston Ring – Nissan (12033-JA10D)

Engine Piston Ring 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 Engine Piston Ring 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.

The Engine Piston Ring in this listing carries part number 12033-JA10D and sits in the Pistons, Rings & Cylinders category. The number stamped on the original part is the only reliable cross-reference.

This is NISSAN dealer-sourced stock rather than an equivalent, so the number on the Engine Piston Ring traces straight back to the manufacturer.