Mahle Rings Grey Iron 1.5MM RBT Second Groove 3.5709 x 1.5MM .155 RW Plain Ring Set

These Mahle piston rings are made from grey iron, a material known for its solid wear resistance and ability to handle heat. The second groove ring measures 1.5mm, and the overall bore size is 3.5709 inches, with a ring width of 1.5mm and a thickness of .155 inches. This set is designed as a plain ring, meaning it doesn't have special coatings or treatments, focusing on the fundamental performance of a well-built piston ring.

When you're rebuilding an engine, the piston rings are critical for sealing the combustion chamber, controlling oil consumption, and transferring heat from the piston to the cylinder wall. This set from Mahle OE is built to meet the original equipment specifications, ensuring it performs as expected in your engine. The grey iron material is a practical choice that offers good performance without unnecessary complexity.