Caterpillar 10R7222 Fuel Injector Assembly

The 10R7222 is a Hydraulic Electronic Unit Injector (HEUI) designed for Caterpillar C7 and C9 diesel engines. It utilizes engine hydraulic pressure to achieve high injection pressures, controlled by a 12V DC solenoid. The injector body is constructed from high-strength alloy steel with a precision-machined nozzle assembly (part number 254-4339). It features a 2-pin Deutsch DT series electrical connector. This part replaces Caterpillar OEM service numbers 387-9433, 293-4072, 267-3360, 254-4339, 235-9650, 268-1835, 268-1840, 387-9434, 254-4330, and 459-8473. It is compatible with hydraulic excavators including 325C, 328C, 330C, 330D, 330DL, 336C, 336D, 340D and motor graders 140M, 160M, M330D. Remanufactured units are tested for solenoid resistance, leakage, flow rate, and injection timing to meet OEM performance standards. Core deposit typically applies for remanufactured exchanges.