Mahle Rings Performance Steel Napier 2nd Ring 3.902in x 1.0MM .136in RW Plain Ring Set

Mahle OE is a well-known name in the engine parts world, often supplying parts directly to manufacturers. This particular set features a steel Napier 2nd ring, which is designed to help control oil consumption and improve sealing in the cylinder. The Napier hook design helps the ring 'dig in' slightly to the cylinder wall, which can be beneficial for performance and oil control, especially in engines that see a lot of use.

This ring set is built to the specific dimensions needed for a 3.902-inch bore, with a 1.0mm second ring thickness and a 0.136-inch oil ring width. When you're rebuilding an engine, getting the piston rings right is crucial for proper compression and long-term reliability. Mahle's reputation suggests these rings are a well-made choice for that job.