Cummins 4974318X Piston Assembly

The Cummins 4974318X piston assembly is manufactured to OEM specifications for the M11, ISM11, and QSM11 engine platforms featuring 10.8L displacement. The component utilizes advanced heat-resistant aluminum alloy construction with coated skirts to withstand extreme combustion chamber temperatures and reduce friction. It includes the piston crown, skirt, pin, retainer clips, and ring set pre-assembled for reduced installation downtime. This assembly serves as a direct replacement for Cummins part numbers 4974318 and 4974318X, and interchanges with kit number 4025158. Primary applications include construction machinery powered by Xi'an Cummins ISM series and Chongqing Cummins QSM/M series engines, specifically found in Hitachi dump trucks, Sany dump trucks, Hyundai excavators, and Sinotruk/Shacman heavy-duty trucks.