Cummins 5284841 Injector Nozzle

The Cummins 5284841 injector nozzle is a critical component of the high-pressure common rail (HPCR) fuel injection system designed for the ISG12 platform engines, specifically the ISGe4-380 rating. This nozzle tip controls fuel atomization and spray pattern directly into the combustion chamber, ensuring optimal combustion efficiency, emissions compliance (Euro IV), and power output of 380 HP. Constructed from hardened alloy steel to withstand extreme injection pressures exceeding 1,800 bar, the nozzle features precision-drilled spray orifices calibrated for the specific combustion bowl geometry of the ISG12 engine. It serves as the wear-sensitive interface within the injector assembly (often Bosch or Cummins branded) and is replaceable during injector overhaul to restore original fuel delivery characteristics. Compatible with Foton Auman series heavy-duty trucks including GTL, ETX, dump truck, and concrete mixer configurations powered by the ISGe4-380 engine.