Bosch original Replacement Common Rail Fuel Injector for Cummins 8.9 QSL9.3 Engine, CRIN3 Series, 2000 Bar 24V DC, Construction Machinery Use, Part No. 0445120377 original new injector

The Bosch 0445120377 is an original solenoid common rail diesel fuel injector manufactured to Bosch OE specifiions for Weichai WP10 and WP12 engines. Operating within the Bosch Common Rail System, it uses ECU-controlled injection to support precise fuel metering, ultra-fine atomization and accurate injection timing. These functions help optimize combustion efficiency, improve engine response and fuel economy, reduce exhaust emissions and engine noise, and contribute to extended engine service life. The injector is intended for Euro III and Euro IV engine appliions and is supplied with a 12-month warranty.

Compatibility covers the listed WP10 and WP12 engine variants, with cross references to Bosch 0445120218, 0445120236 and 0445120266, plus Weichai OE 612640080088 and additional OEM numbers. Appliions span heavy-duty trucks, buses, excavators, wheel loaders, cranes, road rollers, generator sets, marine engines and agricultural machinery. This broad coverage supports maintenance programs for transport fleets, construction operations, industrial power users and marine or agricultural equipment operators.

Key advantages include stable injection quantity, low fuel consumption, reduced black smoke, improved power and reliability under extreme conditions. For installation, clean the fuel system, replace the sealing washer, verify rail pressure and conduct a post-installation leak-off test, performing injector coding where required. Clean diesel, regular filter replacement and periodic injector testing are recommended. Supply terms include a one-piece MOQ, monthly capacity of 10,000 pieces, delivery in 3–15 days, OEM/ODM service and worldwide shipping.