Mahle Rings Performance Steel Napier 2nd Ring 3.801in x 1.0MM .136in RW Plain Ring Set

This Mahle OE piston ring set features a 1.0mm thick Napier-style second ring, measuring 3.801 inches in bore diameter. The Napier design has a barrel-shaped face that helps it scrape oil more effectively as the piston moves down the cylinder wall, which can lead to improved oil control and reduced blow-by. This is a plain ring set, meaning it doesn't have any special coatings, relying on the steel's inherent properties and proper lubrication for performance.

Mahle is a well-known name in engine components, and this set is built to OE specifications. The steel construction offers good durability for everyday driving conditions. When you're rebuilding an engine or replacing worn-out rings, a set like this ensures proper sealing between the piston and cylinder wall, which is critical for compression and efficient combustion. Make sure to check manufacturer instructions for proper installation and break-in procedures to get the best performance from these rings.