Bosch original 0445120305 5268436 0445120064 0445120037 Fuel Injector, High Performance OEM Replacement for Excavator & Engine Applications original new injector

Built for professional diesel fuel-system service, the BOSCH 0445120305 (0 445 120 305) is a high-pressure common rail diesel injector for heavy-duty and industrial engine appliions. As part of the BOSCH 120 Series, it delivers fuel directly into the combustion chamber with precise injection, supporting quiet and efficient combustion. Its common rail design makes it suitable for engine overhaul, fleet maintenance, heavy equipment service, and industrial diesel power systems.
The injector is commonly cross-referenced with Cummins 5268436 and Komatsu 6746-11-3100 / 6746113100. Documented appliions include Cummins Tier 3 8.3L ISC/ISL engines, with additional ISC 8.3L, ISL 8.3L, QSL9, and QSL 8.9L references subject to verifiion. Komatsu references cover the SAA6D114E-5 and related 6D114/SAA6D114 platforms, including PC360 and PC390 excavator appliions. This broad cross-reference coverage supports sourcing for construction, mining, generator set, commercial vehicle, and agricultural machinery service.
Bosch states that Genuine OE injectors are end-of-line tested using OE test specifiions and designed to provide OE performance while meeting emission specifiions. Packaging is recommended as one piece per box, with a full engine set suggested where wear balance is required. Before ordering, buyers should match the old injector part number, engine and equipment models, engine serial number, injector code, and ECU calibration. Related references such as 5268436NX and 6746-11-3102 require additional verifiion, as similar-looking injectors can differ in flow rate, coding, nozzle geometry, and electrical characteristics.