Cummins 3103752X Piston Assembly

The Cummins 3103752X piston assembly features a split articulated design with a forged steel crown and aluminum alloy skirt, engineered for 125 mm bore diameter and 46 mm piston pin diameter. The component withstands extreme combustion pressures and temperatures in 10.8L displacement engines, maintaining ring groove clearance of 0.025 to 0.048 mm for optimal sealing and oil control. This piston kit includes the piston body, piston ring set, wrist pin, and retaining circlips. It serves as direct replacement for Cummins OEM part numbers 3103752, 3103753, and 4089865. Primary applications cover Cummins M11, ISM11, and QSM11 engine platforms installed in Sany mining trucks, Hitachi dump trucks, Hyundai excavators, and general construction machinery.