Bosch original Fuel Injector for Excavator, 0445120204, ISB ISD QSB4.5 QSB6.7, Cross Reference 0445120184, Replacement for OEM 3970987, 0445120384 original new injector

The BOSCH 0445120204 (0 445 120 204) is an industrial-grade common rail diesel fuel injector engineered for high-pressure fuel delivery in Cummins ISBe, ISDe and QSB series engines, including 4.5L–6.7L electronic common rail appliions. Installed at the cylinder fuel port, it works with the engine control unit to regulate injection quantity and timing. High-pressure fuel lifts the injector needle and is delivered as a finely atomized spray, supporting efficient combustion, controlled emissions and consistent engine operation. The injector is designed for common rail systems operating at fuel pressures up to 1800 bar.

Built to Bosch OE quality standards, this injector is available in new, OEM-quality and reman-equivalent service options. Its reference coverage supports part identifiion across OEM and replacement supply chains: Bosch exchange/reman number 0986435519 and Bosch cross references 0445120071, 0445120184, 0445120161 and 0445120267. Cummins OE references include 3970987, 3999832, 4940096, 4981077, 4988835, 5253221, 5253221RX, 5253221NX and 5269194. Additional Dodge and RAM OEM references are 68002012AA/AB/AC/AD and RL002012AB/AC/AD respectively.

Key operating advantages include better fuel economy, lower emissions, stable idling, enhanced power output and extended injector life. Suitable for heavy-duty trucks, city and transit buses, construction and industrial machinery, agricultural equipment, power generation sets and marine auxiliary engines, the 0445120204 provides a versatile option for maintenance and parts sourcing. Industrial export packaging supports B2B distribution.