Bosch original Common Rail Injector, Engine Parts, Fuel Common Rail Injectors 20440412, Cross Reference 20440409, Replacement for OEM, Fits 3829644 for Excavator and Trucks original new injector

Engineered for Volvo's D12D heavy-duty diesel platforms, the Bosch 702 Series Unit Injector 20440412 (Bosch number 0414702007) combines the high-pressure pump and injector into a single electronically controlled assembly based on Bosch Unit Injector System (UIS/PDE) technology. Produced to Bosch OEM specifications and supplied new, it directly replaces Volvo OE numbers 8113895, 5237196 and 3183496, cross-referencing 0414702019, 0986441111, 0986441011 and PDE100/S3007.

The engine camshaft actuates the injector plunger, generating fuel pressure inside the injector body, while the ECU-driven solenoid valve precisely controls injection timing and quantity. Diesel is delivered through the DLLA152P932 multi-hole nozzle (0433171621), producing ultra-fine atomization that improves combustion completeness. The result is accurate fuel metering, high injection pressure, stronger torque output, lower fuel consumption, reduced emissions and reliable cold-start performance, meeting Euro II and Euro III requirements on Volvo FH12 and FM12 trucks powered by D12D340, D12D380, D12D420 and D12D460 engines.

Built from hardened alloy steel with wear-resistant internal components, the injector is engineered for long service life in commercial transportation, fleet operations, logistics, industrial power generation and heavy-duty service. Correct installation requires injector seat inspection, new seals, a new fuel filter, OEM torque values, and leak and ECU diagnostic checks. Routine maintenance—clean diesel, timely filter inspection and periodic injector testing—helps prevent hard starting, black smoke, rough idle, power loss and high fuel consumption, keeping Volvo D12D fleets operating reliably worldwide.