Bosch original For Construction Machinery Engine, Common Rail Fuel Injector 0445120140, for common rail systems, Replacement for OEM 0445120007, 0445120304, 0445120029 original new injector

Built for the fuel demands of modern Cummins diesel platforms, the Bosch 0445120140 (0 445 120 140) is a new, genuine OEM common rail injector manufactured to Bosch OE specifiions. It is intended for ISBe, ISDe and QSB series engines, including the listed 4.0L, 4.5L and 6.7L variants. Appliions cover heavy-duty trucks, buses, coaches, construction and agricultural machinery, generator sets, industrial power equipment and selected marine auxiliary engines.

Operating within a high-pressure common rail system, the injector receives pressurized diesel and is actuated by an ECU signal to its solenoid valve. Precise needle lift and micro-calibrated nozzle holes meter fuel into the combustion chamber and atomize it into fine droplets. This process is designed to improve combustion efficiency, reduce fuel consumption and emissions, and support engine power. Genuine Bosch engineering, precision nozzle manufacturing and heavy-duty durability contribute to long service life, while stable cold-start performance supports dependable operation under demanding conditions.

Cross references include 3973060, 4937065, 4940640 and 0445120067; buyers should verify compatibility by VIN, engine serial number or injector code because calibrations and regional specifiions can vary. The injector is supplied in Bosch original packaging, with a 12-month, supplier-dependent warranty. For service life, use ultra-clean diesel, replace fuel filters regularly and avoid water contamination; during installation, follow OEM torque specifiions, perform a leak test and program the injector code if required.