Mahle Rings Perf Gas Nitrid Steel Oil Ring 4.0846in x 3.0MM .127inRW Plain Ring Set (48 Qty Bulk)

Mahle is a well-known name in the engine parts world, especially for their piston rings. This particular set, the 3030973B, is a performance gas nitrided steel oil ring set designed for serious engine work. You get a bulk quantity of 48 rings, which is perfect for shops or anyone rebuilding multiple engines or working on a large V-configuration engine that requires a lot of cylinders.

These rings are made from steel and feature a nitrided surface treatment. Nitriding is a case hardening process that adds a tough, wear-resistant layer to the surface of the steel. This makes the rings more durable and better able to withstand the high temperatures and pressures found in performance gasoline engines. The oil ring itself is 3.0mm wide with a 0.127-inch rail width, and the overall ring diameter is 4.0846 inches. This specific sizing is crucial for proper sealing and oil control within the cylinder bore.

When you're building an engine where oil control and ring seal are critical for performance and longevity, a well-made set like this from Mahle is a solid choice. Remember that these rings are not CARB approved and cannot be shipped to California. Always refer to your specific engine build's requirements and manufacturer's instructions for installation details.