Mahle Rings Perf Gas Nitride Steel 4.005 x .043 .157 RW Bulk Plain Ring Set (48 Qty Bulk Pack)

In this bulk pack, you're getting 48 sets of Mahle Performance Gas Nitride Steel Piston Rings. These rings are specifically sized for a 4.005 inch bore with a .043 inch thickness and a .157 inch ring width, designed for performance gas engine applications. The nitride steel construction offers improved durability and wear resistance, which is crucial for engines that see a lot of use or are built for higher performance levels. This means they can handle the heat and stress better than standard cast iron rings, helping to maintain a good seal between the piston and cylinder wall over time.

Mahle is a well-known name in engine components, and these rings are built to their OE standards, meaning they fit right and perform reliably. The nitride treatment on the steel surface is a key feature here; it hardens the ring and provides a solid base for break-in, helping them seat properly against the cylinder wall quickly. This proper seating is essential for optimal compression and oil control, reducing blow-by and oil consumption. Because this is a bulk pack of 48 sets, it's ideal for shops or builders who are working on multiple engines or doing a high-volume rebuild project. You'll have plenty on hand for various builds requiring this specific size and type of ring.

When you're rebuilding an engine, especially one intended for performance use, the piston rings are a critical component for sealing the combustion chamber and controlling oil. These Mahle rings are a solid option for ensuring that seal is maintained. 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 procedures and recommended break-in processes to get the best performance and longevity from these components.