Mahle Rings Plasma Moly Steel 1.5MM x .151 RW 4.090in Bore Diameter Moly Ring Set

This set includes Mahle OE piston rings designed for a 4.090-inch bore diameter. The rings are constructed from plasma moly steel, featuring a 1.5mm top ring and a 0.151-inch second ring. This type of ring set is commonly used when rebuilding or replacing pistons in an engine, ensuring a proper seal between the piston and cylinder wall.

The plasma moly coating on the top ring is a durable surface treatment that helps reduce friction and wear, contributing to a longer ring life and consistent performance. This construction is well-suited for engines that see regular use, providing a solid seal to maintain compression and manage oil consumption. Mahle is a well-known name in engine components, and this ring set reflects their focus on reliable parts for engine rebuilding.