Piston Ring Set 4.170 .043 .043 3.0mm

The MAHLE PISTONS Piston Ring Set 4.170 .043 .043 3.0mm is designed for serious engine builders and mechanics engaged in high-performance rebuild projects. This precision-manufactured ring set is essential for sealing combustion pressure and controlling oil consumption, which are critical for any engine that demands reliability and power delivery.

This ring set features a 4.170-inch bore diameter with dual .043-inch compression ring thickness and a 3.0mm oil control ring, optimized for four-cylinder engines in the 2.0- to 2.3-liter displacement range. The manufacturing process ensures tight tolerances and a consistent ring face finish, which is crucial for rapid seat-in and minimal wear during break-in. The .043-inch compression ring thickness provides adequate radial strength while maintaining compliance with modern piston designs.

Engine builders and mechanics working on four-cylinder engines will find this ring set ideally suited for various applications, including rebuilding strokers and restoring vintage engines. The 3.0mm oil ring geometry effectively manages oil film without excessive drag, ensuring long-term durability and performance. Selecting the correct ring geometry directly impacts compression ratio and blow-by control, making this ring set a valuable choice for performance enthusiasts.