Mahle Rings Gas Nitride Steel Performance Top Compression Ring 4.605 x .043 .170 RW Plain Ring Set

This set includes Mahle OE performance top compression rings, made from steel and treated with a gas nitride finish for improved wear resistance. These rings are designed for a 4.605 inch bore diameter, with a ring width of .043 inches and a depth of .170 inches. The 'RW' designation indicates a specific profile suitable for performance applications.

The gas nitride treatment on these steel rings helps them stand up to the heat and stress of performance engines. This process hardens the surface, making the rings more durable and less prone to scuffing, which is crucial for maintaining a good seal under demanding conditions. They are a plain ring design, meaning they don't have any special features like expanders or oil control elements built into the top ring itself, focusing purely on compression sealing.