The Mahle OE oil ring assembly is a gas-nitrided steel oil ring sized at 4.0650 inches with a 3.0 mm section and .127-inch ring width, supplied in a 48-piece bulk pack. Specified for gasoline applications, this bulk oil ring set is practical for shops and rebuilders managing multiple engines. The overview focuses on exact dimensions and the nitrided-steel construction noted in the source.
Mahle Rings Perf Gas Nitrid Steel Oil Ring 4.0650in x 3.0MM .127inRW Plain Ring Set (48 Qty Bulk)