Piston Ring Set 4.005 1.5 1.5 3.0mm

The MAHLE Piston Ring Set 4.005 1.5 1.5 3.0mm (Part Number 4005MS-15) is a file-fit piston ring kit designed for high-performance eight-cylinder engines. This set is ideal for serious engine builders and racing applications, where precise bore sizing and optimized compression characteristics are crucial for performance.

Constructed from ductile iron and featuring a plasma moly coating, this piston ring set offers superior wear resistance and extended service life in demanding engine environments. The 4.005-inch bore specification and the ring thickness configuration—1.5mm top ring, 1.5mm second ring, and 3.0mm oil control ring—ensure effective compression balance and oil management for consistent performance.

Engine builders will appreciate the file-fit design, which requires careful honing of the cylinder bore and precise gap fitting before installation. This meticulous process is essential for achieving optimal sealing performance, making the MAHLE Piston Ring Set a reliable choice for high-performance applications.