Bosch original Diesel Fuel Injector 0445120254, Replacement for Common Rail Injector Nozzles, Cross Reference 0445120256, Fuel Injector 0445120255 for Diesel Applications original new injector

Built around Bosch’s solenoid-controlled common rail technology, the BOSCH 0445120254 diesel fuel injector is engineered for high-pressure CRDI systems requiring accurate fuel metering and consistent atomization. ECU-controlled injection timing and hydraulic needle-valve operation support multiple injection events, helping improve combustion efficiency, power output and fuel economy while reducing combustion noise, particulate emissions and fuel consumption. Its precision internal components and OE-level design also support stable idle performance and long service life in demanding operating conditions.
The injector is referenced as 0 445 120 254, with exchange number 0986435508 (0 986 435 508) and remanufactured reference 0445120254R; additional cross references include CRI254 and CRIN2 Series. It is suitable for Cummins ISBe, ISDe, QSB, QSB4.5, QSB6.7, B Series and C Series engines. Equipment coverage includes heavy-duty and commercial trucks, buses, coaches, excavators, wheel loaders, road construction equipment, tractors, harvesters, diesel generator sets and industrial power units, supporting broad aftermarket sourcing and appliion requirements.
For dependable service results, installation should use new sealing washers, manufacturer torque specifiions and any required injector coding, followed by leak testing. Fuel filters should be replaced during injector replacement, and high-pressure fuel lines should be inspected. Ongoing best practices include clean, high-quality diesel, water-contamination prevention, rail-pressure monitoring and return-flow testing, supported by ECU fault-code scanning and injector coding verifiion during diagnosis.