Engine Piston – Mazda (pey111sa0c)

Engine 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 Engine 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.

Ordering reference for the Engine Piston is part number pey111sa0c, categorised under Pistons, Rings & Cylinders. Match that number against the component you are removing before you order.

Genuine MAZDA supplied for this Engine Piston, with the engineering number unchanged from the factory reference stamped on the original.