Mahle Rings Performance Plasma Moly Steel Top Compression Ring 4.000 x .0625 .190 RW Moly Ring Set

Mahle OE offers these top compression rings, designed for a 4.000 inch bore with a .0625 inch thickness and .190 inch radial width. They are constructed from plasma moly steel, a well-built material known for its durability and performance in demanding engine conditions. These rings are a crucial component for sealing the combustion chamber, helping to maintain proper compression and prevent blow-by.

The plasma moly coating on these rings provides an improved wear surface, which is especially beneficial for engines that see regular use or are built for performance. This coating helps reduce friction between the ring and the cylinder wall, contributing to longer engine life and consistent performance. When rebuilding an engine, ensuring you have solid piston rings like these is key to achieving optimal power and efficiency.