Caterpillar original Truck Engine Part Common Rail Diesel Fuel Injector 20R-1304, Cross Reference 359-7434, 10R-3264, 229-5919, for C15 C18 Engine, Excavator and Truck original new injector

For fleet operators and industrial equipment maintenance teams seeking specification-compliant replacement parts for Caterpillar C15 power systems, the 20R-1304 OEM remanufactured diesel fuel injector delivers factory-matched performance. It is engineered to fit the full Caterpillar C15 engine lineup, including base C15, C15 ACERT, industrial, generator, marine and mining-specific variants, and meets all strict Caterpillar fuel system requirements to enable direct, trouble-free installation as a core component of the engine’s Electronic Unit Injection (EUI) setup.

Operating within the EUI framework, the injector receives real-time operational data from the engine’s Electronic Control Module (ECM), which calculates exact injection timing and fuel volume before signaling the injector solenoid to generate high-pressure fuel and deliver atomized fuel to the combustion chamber. Built to OEM tolerances, it features a precision-machined nozzle, long-wear internal parts and corrosion-resistant construction, with factory calibration to boost combustion efficiency, cut fuel consumption and emissions, increase power output and support reliable operation in severe-duty conditions.

The 20R-1304 supports a broad range of heavy-duty assets across sectors, including C15-equipped Peterbilt, Kenworth and Freightliner trucks, Caterpillar mining equipment and generator sets, industrial power units, marine diesel systems, construction and oilfield machinery. Warranty support is available, and buyers are recommended to verify compatibility via engine serial number before ordering, follow official Caterpillar torque guidelines during installation, and perform routine fuel system maintenance to maximize service life.