The principal function of the piston rings is to form a seal between the combustion chamber and the crankcase of the engine. As rings wear, the ability to perform these functions is decreased resulting in oil consumption and blow-by. When this happens it is time for a new set of rings. Sold as set.
Ordering Note: To ensure the proper ring size please measure piston diameter along with the thickness of the ring grooves or the old set of rings, common sizes are 1.5mm, 1.75mm and 2mm for the top and second compression rings. Oil rings can measure 4mm and 5mm.