Bosch original Common Rail Fuel Injector, 6.7L Diesel Engine, 0445120050, Cross Reference 5253220, 0445120380, Replacement for OEM, 3999832, 2007-2012 Diesel Cars original new injector

Precision fuel delivery and broad catalog coverage make the Bosch 120 Series 0445120050 a practical common rail injector for automotive and industrial diesel buyers. This original new injector is manufactured to Bosch OEM quality standards and bench tested for flow rate, spray pattern and leakage control. Its hardened steel components are designed to resist wear, heat, corrosion and pressure cycles, while the precision nozzle and high-pressure design support consistent fuel delivery and long-term performance.
Operating within a common rail system, the injector works with fuel supplied at up to approximately 1,600 bar. The rail maintains uniform pressure independently of engine speed, and the ECU directs the injector through electrical signals. A rapid-response solenoid actuator controls valve timing and duration, while the multi-hole nozzle atomizes fuel into fine droplets. This process promotes complete combustion and supports thermal efficiency, torque response and fuel economy, with reduced particulate emissions. It also accommodates pilot, main and post-injection strategies for optimized combustion events.
Engine and equipment coverage includes the Cummins 6.7L inline-six turbo diesel, Dodge RAM 2500/3500 HD models, Class 3–7 commercial fleets, industrial generator sets, excavators, loaders and tractors using common rail systems. Extensive OE and cross-reference listings, including 0445120185, 0445120193, 0986435518, 3999832, 4940095, 4981076 and 5253220, help distributors and maintenance buyers match replacement requirements across multiple diesel applications.