Mahle Rings Performance Plasma Steel Top Ring 4.055in x 1.0MM .143in RW HVOF Moly Ring Set

The top ring in this Mahle set is made from plasma-injected steel, a strong material chosen for its ability to handle the heat and pressure at the top of the cylinder. This ring measures 4.055 inches across and is 1.0 millimeter thick, with a 0.143-inch ring groove width. The HVOF Moly coating on the ring face is a key feature that helps reduce friction and wear, which is important for the longevity of your engine's performance.

Mahle has applied a High Velocity Oxygen Fuel (HVOF) Moly coating to the ring's surface. This advanced coating process creates a dense, well-bonded layer that resists abrasion and helps the ring seat properly against the cylinder wall. This means you can expect improved sealing and reduced oil consumption, contributing to a healthier engine overall. These rings are designed to fit specific piston groove dimensions, ensuring a proper seal when installed.