Mahle Rings Performance Plasma Steel Top Ring 4.275in x 1.0MM .143in RW HVOF Moly Ring Set

Mahle is known for making solid OE replacement parts, and this performance plasma steel top ring set is no exception. If you're rebuilding an engine and need reliable piston rings, these are a great option. They are designed to fit pistons with a 4.275-inch bore and feature a 1.0mm top ring groove with a .143-inch ring width.

What sets these rings apart is the HVOF Moly coating on the top ring. This High-Velocity Oxygen Fuel coating is applied to create a very dense, hard layer that resists wear and helps maintain a good seal between the piston and cylinder wall. This means better compression and less oil consumption over time, especially in performance applications. The plasma steel construction also offers good strength and heat resistance.