original 370-7280 Diesel Fuel Injector 3707280 T409982 for C4.4 C7.1 Engine E320E E323E 320F 323F 324E 325F Excavator 950K 962K 966F Loader Injector original new injector

Engineered for demanding heavy-duty operations, this high-pressure common rail fuel injector assembly (OE 370-7280, cross reference 20R-2476, 295050-0330, 295050-0331) delivers OEM-calibrated performance for C4.4, C4.4 ACERT, C4.4 Industrial, C4.4 Generator, and selected C7.1 engine platforms. Manufactured with a precision atomization nozzle and industrial-grade construction, the injector supports stable power delivery, optimized spray pattern, and consistent fuel metering across the full engine operating range. Corrosion-resistant materials ensure long-term reliability in construction, mining, agricultural, and power generation environments.

The injector is a direct fit for 320F, 323F, 324E, 326F, and 329E hydraulic excavators, as well as M315F, M317F, and M323F material handlers, generator sets, and industrial engine power modules. Applications extend to wheel loaders, backhoe loaders, telehandlers, mining auxiliary power units, agricultural irrigation power units, standby and prime power generator systems, compressors, pumps, and industrial manufacturing systems. Precise fuel delivery improves combustion efficiency, reduces fuel consumption, lowers emissions, enhances cold-start behavior, and minimizes engine noise and vibration.

Recommended installation includes disconnecting the battery, relieving fuel pressure, inspecting the injector bore, replacing sealing components, tightening to OEM torque specifications, and performing leak and operation verification tests. Diagnostic indicators such as DTC codes, excessive exhaust smoke, elevated fuel consumption, engine vibration, reduced power output, or poor acceleration signal replacement. Use clean diesel fuel, timely filter replacement, and periodic injector balance testing to maximize service life.