Mahle Rings Performance Plasma Steel Top Ring 3.801in x 1.0MM .143in RW HVOF Moly Ring Set

Mahle OE offers this performance plasma steel top ring set, designed for engine rebuilds where improved sealing and durability are key. These rings are 3.801 inches in diameter, with a 1.0mm thickness and a 0.143-inch wireback height. The plasma-moly coating on the face helps reduce friction and wear, which is important for maintaining compression and oil control over time.

The HVOF (High Velocity Oxygen Fuel) process used to apply the plasma coating creates a very dense and well-bonded layer. This means the ring face is tough and resistant to abrasion, helping it seat properly against the cylinder wall and maintain a good seal. This is a well-built component for anyone rebuilding an engine and looking for reliable piston ring performance.