Caterpillar original  10R-0782 fuel injector nozzle for 3126 3126B C7 engine 322C 325C 950G excavator main pump spare parts 1286601 1986605 new original new injector

The Caterpillar 10R-0782 HEUI fuel injector is engineered for CAT 3126, 3126B, and 3126E diesel engines, delivering precise fuel metering through electronically controlled unit injector technology. The HEUI system combines ECM electronic signals with high-pressure engine oil actuation to achieve stable combustion, smoother idle, and improved fuel economy. This remanufactured injector is designed to handle low-sulfur and low-lubricity fuels, restoring engine power, correcting rough running conditions, and reducing excessive smoke output. It is a direct replacement for OE part numbers 178-0199, 178-0198, 177-4754, 205-1285, EX630782, and 10R-9237.

Built for heavy-duty industrial and construction environments, the 10R0782 injector is widely used in CAT 322C, 325C, 950G II, 962G II, IT62G II, 570B, 580B, and M325C excavators, wheel loaders, toolcarriers, harvesters, and mobile hydraulic power units. It also fits 3126B truck engines, petroleum engines, generator sets, and industrial power applications. Each injector is remanufactured to OEM-style specifications, ensuring reliable sealing, consistent spray pattern, and dependable performance under demanding load conditions. The robust construction supports extended service life in high-cycle commercial operations.

Proper maintenance is essential for long-term HEUI injector performance. Operators should use clean diesel fuel, drain the water separator regularly, and replace fuel and oil filters on schedule, as HEUI injectors are highly sensitive to oil pressure and oil cleanliness. Inspecting electrical connectors and harnesses helps prevent intermittent faults. If rough idle, hard starting, misfire, black or white smoke, or increased fuel consumption occurs, perform an ECM fault code scan, cylinder cutout test, and high-pressure oil system test to identify injector-related issues. Remanufactured units should be returned as complete, undamaged cores per the supplier core policy.