original 10R-0781 New Fuel Injector for 3126 C7 3162 Engine 324D 325C 329D 330C Construction Machinery Spare Part 10R-0782 10R-9237 original new injector

Engineered as a direct replacement for the 3126, 3126B, 3126E and C7 7.2L HEUI diesel platform, injector 10R-0781 is remanufactured to original specification and cross-referenced against 197-7107, 198-6605, 199-6065, 222-5966, EX630781 and 222-5926 to ensure broad coverage for medium-duty engine service. The HEUI hydraulic electronic unit injector design uses high-pressure engine oil to pressurize fuel, while the ECM controls injection timing and duration for accurate metering across the engine operating range. Six injectors are required to service a complete 6-cylinder engine.

This injector fits medium-duty trucks, school buses, RVs, motorhomes, marine vessels, fire trucks, cranes, construction equipment, industrial power units, forklifts, agricultural equipment, compressors, drilling, crushing, forestry, hydraulic power units, irrigation, mining, paving, pumps and trenchers, and is referenced for use on Freightliner, Ford, GM, International, Kenworth and Western Star applications. When correctly installed on a healthy HEUI system, it supports improved fuel control, engine response, cold starting, fuel economy and emission performance.

Proper maintenance requires clean diesel, clean engine oil, correct filters, stable ECM signals and correct HEUI actuation pressure, because poor oil condition directly affects injector response. Replace seals and O-rings during installation, inspect injector sleeves and wiring harnesses, and verify engine performance with diagnostic equipment after installation. A failed injector can mimic hard starting, rough idle, misfire, low power, excessive smoke and high fuel consumption, so the complete HEUI system including oil pressure, fuel contamination, sensors and ECM calibration should always be evaluated before replacement.