Perkins original Common Rail Fuel Injector for C7 C9 Excavator Diesel 10R-4761 328-2583 241-3400 243-4502 241-3239 241-3238 original new injector

The 222-5961 Perkins C7 diesel fuel injector is engineered as an original OE replacement component for Perkins C7 and Perkins C7 7.2L HEUI diesel engines, widely installed across medium-duty trucks, buses, construction machinery, excavators, loaders, industrial power units, and diesel generator sets. Within the Perkins HEUI injector family this part is commonly cross-referenced under 10R4761, 10R4761R, 222-5959, 233-3536, 236-0973, 241-3238, 243-4502, 293-1408, 295-1408, 328-2583, 387-9430, 20R8057, and the Delphi reman number EX634761, giving fleet operators, rebuild shops, and export distributors a single solution for multiple catalog listings.

Built to original OE quality standards, the injector receives diesel fuel from the supply circuit and uses high-pressure engine oil to generate the actuation pressure required by the HEUI system. The engine control module energizes the injector solenoid to precisely control injection timing and fuel quantity, while the nozzle atomizes the fuel into fine particles for clean combustion. The unit is available in new, remanufactured, rebuilt, aftermarket replacement, and original style replacement options, and can be supplied individually or as a complete set of six injectors, with a core return program available through reman suppliers.

Proper maintenance of the Perkins C7 HEUI system requires clean diesel fuel, timely fuel filter replacement, correct engine oil quality, regular oil filter changes, water separator draining, and inspection of wiring connectors. Because the HEUI injectors rely on engine oil pressure for actuation, poor oil quality, low oil pressure, or oil contamination can directly cause injector response problems. Routine ECM diagnostics, cylinder balance tests, and fuel pressure checks help identify injector-related symptoms such as hard starting, rough idle, misfire, low power, high fuel consumption, knocking, or excessive smoke before major engine damage occurs.