Mahle Rings Performance Gas Nitride Steel 4.025 x .043 .157 RW Plain Ring Set

If you're rebuilding the top end of your engine, getting the right piston rings is crucial for sealing the combustion chamber and managing oil. This Mahle OE ring set is designed for a 4.025 inch bore, with ring thicknesses of .043 inch for the top and second rings, and .157 inch for the oil ring. The steel construction is nitride treated, which adds a hard, wear-resistant surface to help them stand up to the heat and friction inside your cylinders.

These rings are a solid option when you need reliable performance from your rebuilt engine. The nitride treatment helps them seat properly against the cylinder walls, which is key for maintaining compression and preventing blow-by. They're a well-built set that will do the job right for a standard rebuild.