original 10R-4762 Diesel Fuel Injector 10R4762 for C7 Engine Truck Fuel Components 243-4503 293-4071 241-3239 10R-4761  original new injector

The C7 HEUI Diesel Fuel Injector 10R-4762 is engineered as a direct-fit replacement component for C7 diesel engines, including the 7.2L configuration widely deployed across commercial trucks, buses, generator sets, and industrial power units. Designed to meet OEM-style specifications, this electronically controlled unit injector restores accurate fuel metering, proper spray atomization, and stable combustion pressure under varying load conditions. The injector is a critical element of the HEUI fuel system, where hydraulic oil pressure actuates the injection event, making internal cleanliness and seal integrity essential for long service life. This part is commonly referenced alongside cross numbers including 10R-4762, 10R4762, 10R4762R, EX634762, 222-5962, 238-9808, 241-3239, 243-4503, 295-1409, 328-2584, 387-9429, 20R-8058, 10R-4761, and 10R-4763.

Proper fitment requires confirmation of engine serial prefix, horsepower rating, emissions configuration, and ECM calibration prior to installation. The injector is built for heavy-duty operating environments typical of construction machinery, agricultural equipment, mining support vehicles, and on-highway commercial fleets. Maintenance best practices emphasize cleaning the injector bore, replacing all seals and O-rings, and inspecting both the diesel fuel system and the high-pressure oil system for contamination, pressure loss, or aeration. After installation, injector trim-code programming may be required to ensure correct ECM calibration and optimal engine performance.

Common diagnostic indicators such as hard starting, rough idle, white or black smoke, misfire, power loss, elevated fuel consumption, or active fault codes may point to injector wear, but can also originate from fuel pressure irregularities, oil pressure loss, wiring faults, turbocharger failure, EGR issues, or aftertreatment restrictions. Professional diagnosis is therefore recommended before injector replacement. For fleet operators, rebuild shops, and industrial maintenance programs requiring a reliable C7 fuel injection solution, the 10R-4762 HEUI injector offers a consistent replacement option backed by broad cross-reference coverage and verified engine compatibility.