Mahle Rings Performance Grey Iron Top Compression Ring 3.149 x 1.5MM Plain Ring Set

Mahle is a well-known name in engine components, often supplying parts directly to automakers. This set of top compression rings is made from grey iron, a solid material for piston rings that offers good wear resistance. Each ring measures 3.149 inches in diameter and has a 1.5mm thickness, designed to fit specific pistons during an engine rebuild.

These are plain-style compression rings, meaning they don't have any special features like expanders or oil control elements built into them; they work in conjunction with separate oil control rings. The grey iron construction helps them seat well against the cylinder wall, creating a good seal for optimal combustion. When you're rebuilding an engine, getting the right piston rings is crucial for restoring compression and ensuring the engine runs smoothly.