Mahle Rings 4.135in Bore .043in 3.00MM Plasma Moly Ductile Low Tension Reduced Rad Moly Ring Set

Mahle OE is known for making solid engine components, and this set of piston rings is no exception. If you're rebuilding an engine that requires a 4.135-inch bore, these rings are built to fit right in. They feature a plasma moly ductile construction with low tension and reduced radial pressure, which helps them seal effectively against the cylinder wall.

The plasma moly coating on these rings is a notable detail. It's a tough surface treatment that helps reduce friction and wear, contributing to a longer lifespan for both the rings and your cylinder walls. This means you can expect improved performance and reliability from your engine rebuild. The low tension design also helps reduce drag, potentially leading to better fuel economy and a bit more power.

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 any other components you might need for your rebuild.