Bosch original Fuel Injector 21160093 0414702021 for Large Engine, FH12 FM12 D12 V-ol-vo Engine, Cross Reference 3155044, Replacement for 20440409 original new injector

Built on Bosch's proven PDE (Pump Düse Element) / UIS (Unit Injector System) technology, the 0414702021 (0 414 702 021) is a genuine new OEM diesel unit injector from the Bosch 702 Series, designed for heavy-duty diesel engines. By integrating pumping and injection functions into a single compact unit, it delivers precise fuel metering, superior atomization, and accurately controlled, ECU-managed injection timing under camshaft-driven high pressure. The result is improved combustion efficiency, reduced fuel consumption, lower particulate emissions, and stable performance that meets modern emission standards.

Designed as a direct OEM replacement, the 0414702021 fits Volvo D12 series engines including D12A, D12C, D12D, D12C420, D12D420, D12C460, and D12D460, powering Volvo FH12, FM12, NH12 and related FH420/FH460/FM420/FM460/NH420/NH460 heavy-duty trucks. It also serves industrial generator sets, mining equipment, marine diesel engines, agricultural machinery, and construction equipment. Cross references—Bosch 0414702003, 0414702005, 0414702010, 0986441006, 0986441106 and Volvo 20381597, 20440409, 3155044, 8113408, 8170569, 5237322, 6050251—simplify sourcing and interchange verification.

Manufactured to strict OEM quality standards, the injector features high-pressure injection, precision fuel delivery, corrosion resistance, and long service life. Key performance benefits include better fuel economy, reduced exhaust smoke, stable idle, and improved engine response. For distributors, fleet operators, and engine rebuilders in the global OEM and aftermarket, correct installation—new sealing components, calibrated torque tools, injector coding where required, and leak-back testing—ensures dependable operation and extended engine service life.