Cummins 4026222 Fuel Injector Assembly

The Cummins 4026222 is an Electronic Unit Injector (EUI) designed for the Celect and High Pressure Common Rail fuel systems used in M11, ISM11, QSM11, L10, and MTA11 engine platforms. It utilizes solenoid actuation to deliver precise fuel quantity at injection pressures up to 135 MPa. The injector assembly integrates the nozzle and solenoid valve into a single unit mounted directly in the cylinder head. This design ensures rapid response times and accurate fuel delivery across the engine operating map. The component is engineered to withstand the high thermal and mechanical loads of heavy-duty diesel cycles in construction machinery and on-highway truck applications. Cross-reference interchangeability includes OEM part numbers 4903472, 4061851, and 3411753. Remanufactured variants are identified by suffixes PX, RX, and X.