Mahle Rings Perf Gas Nitride Steel 4.020 x .043 .157 RW Bulk Plain Ring Set (48 Qty Bulk Pack)

Mahle is a well-known name in engine components, often supplying parts directly to automakers. This bulk pack of performance gas piston rings, part number 3011165B, is built for demanding engine builds. They feature a nitride steel construction for improved durability and wear resistance, crucial for engines that see regular use or higher performance demands. The rings measure 4.020 inches in bore size with a .043 inch thickness, and the oil ring is .157 inches, making them suitable for a range of performance gasoline engine applications.

This set comes in a bulk pack of 48, ideal for shops or builders working on multiple engines or larger projects. The nitride treatment on these rings helps them stand up to heat and friction, contributing to a solid seal and better engine longevity. When rebuilding or modifying a gasoline engine, selecting reliable piston rings is key to ensuring proper compression and oil control, and Mahle's reputation in the OE space suggests a well-made component.

Please note that these rings are not CARB approved and cannot be shipped to California. Always refer to your specific engine build requirements and manufacturer guidelines for installation.