Cummins 5473254 Injector Repair Kit Assembly

The Cummins 5473254 injector repair kit is engineered for the XPI (High Pressure Common Rail) fuel injection system utilized in ISG series engines. This kit provides the critical internal components required for injector overhaul, specifically targeting the control valve assembly and sealing interfaces. Kit contents typically include the valve rod (control valve), valve seat, and necessary O-rings or seals to restore injector sealing integrity and fuel metering precision. The components are manufactured to meet original equipment dimensional tolerances and material hardness specifications for high-pressure diesel operation. Primary application covers Cummins ISG engines equipped with XPI injectors, commonly referenced against injector assembly part numbers 4307475 and 5491515. This repair kit serves medium and heavy-duty truck platforms as well as construction machinery powered by the ISG/QSB6.7 engine family. Installation requires authorized service tooling and calibration procedures per Cummins service manual guidelines.