Caterpillar 2123463 HEUI Fuel Injector Assembly

The Caterpillar 2123463 is a Hydraulic Electronic Unit Injector (HEUI) designed for Caterpillar C10, C12, 3176C, and 3196 heavy-duty diesel engines. It utilizes engine hydraulic pressure to achieve high injection pressures, electronically controlled via a solenoid valve. This injector assembly is critical for precise fuel metering, atomization, and combustion efficiency in heavy equipment applications. Remanufactured units are processed in ISO 9001:2015 certified facilities, involving complete disassembly, ultrasonic cleaning, replacement of wear components (nozzle, solenoid, control valve, springs, seals), and calibration with a new trim code to match OEM flow specifications. It serves as a direct replacement for OEM part numbers 10R0963, 10R9235, 0R8773, 1945083, and 390092X. Applications include Caterpillar 345B, 365B series excavators, 725/730 articulated trucks, and R1600/R1700G underground mining trucks.