Caterpillar original Common Rail Fuel Injector 392-0224 20R-1278 Replacement for OEM 392-0200, Cross Reference 392-0217, fits C3500B E3508 E3516 Engines original new injector

Built for the rigorous operating demands of Caterpillar 3512B diesel engine platforms, the 392-0224 fuel injector is a precision-machined OEM-standard component engineered to deliver consistent, efficient engine performance across heavy-duty industrial use cases. As a core part of the fuel delivery system, it accurately meters and delivers diesel fuel into the combustion chamber at precisely controlled pressures and timing intervals, optimizing fuel atomization and complete combustion to boost power output, reduce fuel consumption, lower exhaust emissions, and extend overall engine service life.

This high-pressure diesel injector is designed as a direct fit for CAT 3500 Series 3512B V12 engine variants, including models purpose-built for power generation, marine propulsion, mining operations, industrial plants, and offshore oil and gas installations. It cross-references with replacement part numbers 326-1646 and 3261646, enabling seamless interchange for routine maintenance and full engine rebuilds without system modification, and supports equipment ranging from generator sets and marine vessels to mining drilling rigs and data center backup power systems.

Constructed from high-strength alloy steel with anti-corrosion surface treatment, the 392-0224 injector withstands harsh operating conditions from high-vibration mining sites to salt-exposed marine environments. It is manufactured to strict OEM quality specifications, comes with a 12-month warranty and export-standard packaging for global distribution, and is a trusted solution for fleet operators, power plant managers, mining contractors, marine service teams, and engine rebuilders seeking to minimize unplanned downtime.