Mahle Rings Perf Steel Napier 2nd Ring 4.325in x .043 .135in RW Plain Ring Set (48 Qty Bulk Pack)

Mahle OE is known for making solid engine components, and this set of performance steel Napier 2nd rings is no exception. These rings are designed for engine builds where reliable sealing is critical. The Napier hook design on the second ring helps improve oil control and prevent blow-by, while the steel construction offers good durability.

This is a bulk pack containing 48 rings, making it a practical choice for shops or builders working on multiple engines or performing a large-scale rebuild. The 4.325-inch bore size and the specific dimensions of .043 inch for the top ring groove and .135 inch for the second ring groove are important to match with your piston specifications. Proper ring gap and tension are key to good compression and oil control, and these Mahle rings are well-made to meet those needs.