Caterpillar original Common Rail Fuel Injector 250-1302 10R-9617, Cross Reference 386-1754, 246-1854 for CAT 3512B 3516B C3500B Engines, Excavator Replacement for OEM Parts original new injector

Engineered to meet strict OEM specifications for Caterpillar 3512B engine platforms, the CAT 250-1302 fuel injector assembly is a heavy-duty diesel fuel system component built for continuous operation in harsh industrial environments. Its precision-machined nozzle and corrosion-resistant construction are designed to withstand extreme injection pressures, elevated combustion temperatures, and the sustained duty cycles common in power generation, marine, mining, and oilfield operations.

The injector operates via a calibrated high-pressure fuel delivery process: fuel enters the injector body from the fuel gallery, and the needle valve remains closed until the required injection pressure overcomes spring force, at which point fuel atomizes through precision nozzle orifices into the combustion chamber, before the injector closes immediately after delivery. This controlled process delivers precise fuel metering, stable combustion, and optimized atomization, delivering tangible benefits including improved fuel efficiency, reduced particulate emissions, increased power output, and enhanced cold-start performance.

As an OEM-equivalent replacement component, the 250-1302 injector is compatible with a broad range of Caterpillar engine platforms including 3512B, 3512, 3516B, 3516, 3508B, and 3508, and supports equipment spanning generator sets, marine propulsion systems, offshore power modules, mining haul systems, oil and gas equipment, industrial compressors, and heavy industrial machinery. Compatibility must be verified using the engine serial number and injector part number before ordering, and adherence to official installation guidelines and scheduled maintenance will maximize the component’s service lifespan.