Cummins 5491531 Fuel Injector Assembly

The Cummins 5491531 is a high-pressure common rail fuel injector designed for the XPI (eXtreme Pressure Injection) fuel system. It is engineered for Euro V and Euro VI (China VI) emission compliance on 12-liter displacement platforms. This injector assembly serves the ISG11, ISG12, ISG13, QSG12, X11, X12, and X13 engine families. It features solenoid-actuated control with precision-machined nozzle orifices for optimized fuel atomization and combustion efficiency. The component is a direct OEM replacement for factory-installed units on Foton Auman GTL, EST, and Daimler series heavy-duty trucks, as well as construction machinery and power generation applications.