Bosch 0445120134 Fuel Injector Assembly

The Bosch 0445120134 is a high-pressure common rail diesel fuel injector designed for the Cummins ISF3.8 engine platform. It utilizes solenoid actuation technology to precisely control fuel delivery timing and quantity under electronic control unit (ECU) command. The injector assembly integrates the nozzle DLLA141P2146 and control valve F00RJ02103 as serviceable components. The corresponding overhaul repair kit is designated F00RJ03288. This injector serves as a direct replacement for Cummins OEM part numbers 4947582 and 5283275. It is widely applied in light and medium-duty commercial trucks such as Foton models, as well as construction machinery including Komatsu hydraulic excavators. Additional engine compatibility extends to Cummins QSB5.9, QSB6.7, ISDe, and Deutz BF6M1013 series engines utilizing common rail fuel systems. Installation requires verification of the specific engine control unit (ECU) calibration and fuel system cleanliness to prevent premature failure.