Mahle Rings Perf Gas Nitride Steel 4.185in x .043in .157 RW Bulk Plain Ring Set (48 Qty Bulk Pack)

If you're rebuilding the engine in a performance gas application, getting the right piston rings is crucial for sealing and power. This bulk pack of 48 piston rings from Mahle OE is designed for those situations where you need a solid, well-made ring set for multiple engines or a performance build.

These rings are made from steel and feature a nitride coating. Nitriding is a heat-treating process that hardens the surface of the steel, making it more resistant to wear and helping it seal against the cylinder wall effectively. The rings measure 4.185 inches in bore size and have a thickness of .043 inches for the top and second rings, with a standard oil ring setup. This specific set is a bulk pack, meaning you get 48 rings, which is ideal if you're working on several engines or a high-volume shop.

Keep in mind that these rings are not CARB approved and cannot be shipped to California. Always refer to your engine's specific service manual for installation details and proper ring gap settings.