Mahle Rings Performance Plasma Moly Steel HV385 Top Ring 3.238in x 1.0MM .143in RW Moly Ring Set

These Mahle top rings are made from plasma moly steel, a strong material chosen for its durability and ability to hold up under heat. The top ring is the first line of defense in sealing the combustion chamber, and this particular design measures 3.238 inches in diameter with a 1.0mm thickness and a .143 inch face width. This specific sizing and material choice helps create a tight seal between the piston and cylinder wall, which is crucial for maintaining compression and preventing blow-by.

When you're rebuilding an engine or looking to restore performance, a well-made set of piston rings like these from Mahle OE is essential. They are designed to work effectively within the cylinder, helping to manage oil consumption and ensure efficient combustion. The plasma moly coating on the top ring is a notable feature that adds to its wear resistance, meaning it can handle the stresses of regular engine operation.