Mahle Rings Performance Plasma Steel Top Ring 4.095in x 1.0MM .143in RW HVOF Moly Ring Set

Mahle OE offers this performance plasma steel top ring set, designed for engines needing a reliable piston ring upgrade. These rings measure 4.095 inches in bore size with a 1.0mm top ring groove and a 0.143-inch oil ring groove. The plasma-moly coating on the top ring is applied using HVOF (High Velocity Oxygen Fuel) thermal spray, creating a very dense and well-bonded layer that helps reduce friction and wear.

This type of coating is known for its durability and ability to handle the heat and stress found in performance applications. The steel construction of the top ring offers good strength and resilience. These rings are a solid option when rebuilding or upgrading an engine where improved sealing and reduced wear are important goals. They are intended to fit right into standard piston grooves for the specified bore size.