original 178-0199 Engine Diesel Injector 10R-0782 10R-9237 183-0691 for 3126 3126B 3126E 950G 962G Fuel Injectors replacement new injector original new injector

The 178-0199 HEUI fuel injector is purpose-engineered for 3126, 3126B, 3126E, and C7 diesel engines, delivering precise fuel metering and stable combustion performance across a wide range of heavy-duty operating conditions. Designed as a direct replacement for OE numbers 178-0199, 10R-0782, 128-6601, 198-6605, 222-5966, and 173-9379, the injector maintains correct injection timing and pressure for HEUI systems, supporting consistent engine output, reduced smoke, and efficient fuel consumption.

This injector assembly is widely used in 322C, 322C FM, 325C, 325C L, 325C FM, M325C, and M325C MH excavators, 950G II and 962G II wheel loaders, IT62G II integrated toolcarriers, 570B and 580B wheel harvesters, as well as trucks and industrial diesel equipment. Electronic control compatibility and robust thermal and vibration resistance allow the unit to perform reliably under demanding construction, forestry, and material-handling applications. Each injector is quality-checked through leakage, flow, electrical, response, and visual inspection procedures.

Proper maintenance of the HEUI injection system is essential for long service life. Operators should use clean diesel fuel, replace fuel filters on schedule, drain the water separator, maintain correct engine oil quality, keep air filters clean, inspect wiring harnesses, and monitor engine diagnostic data. Clean engine oil and adequate high-pressure oil supply are critical for HEUI operation. Replacing sealing components and verifying wiring before installation help prevent hard starting, rough idle, misfire, power loss, excessive smoke, and high fuel consumption.