Bosch original Unit Fuel Injector 3155044, Cross Reference 3829644, 21160093, 20440409, Diesel Engine Parts for excavators, trucks, automobiles, Replacement for OEM compatible original new injector

Built on the Bosch UIS / PDE (Pump Düse Element) technology platform, the BOSCH 700 Series Unit Injector 3155044 delivers precision diesel fuel injection for Volvo heavy-duty engine applications. This electronically controlled unit injector combines high-pressure fuel generation and fuel delivery in a single component, serving Volvo D12, D12C, D12D, D12C420, D12D420, and D12C460 engines as well as Volvo Penta D12 and industrial D12 power units. Typical installations include Volvo FM12, FL12, and NH12 trucks, marine engines, diesel generator sets, and construction equipment.

During operation, the engine camshaft mechanically actuates the injector plunger to generate extremely high injection pressure, while the ECU-controlled solenoid valve determines injection timing with precision. Fuel exits through micro-machined nozzle holes, producing superior atomization for efficient combustion. The result is improved fuel economy, lower emissions, stronger torque output, enhanced cold starting, and long service life. Manufactured with precision machining, hardened steel components, advanced surface treatments, and OEM-level calibration, the 3155044 is engineered to withstand severe operating conditions in truck, marine, and industrial environments.

The 3155044 interchanges with Volvo reference numbers 20381597, 20440409, 8113408, 8170569, 6050251, and 5237322, plus Bosch numbers 0414702010, 0414702021, 0414702013, 0986441006, and 0986441106. Every unit is 100% tested before shipment, backed by a 12-month warranty, with a minimum order quantity of one piece and worldwide shipping available for OEM and aftermarket buyers.