original Diesel Common Rail Fuel Injector 2645A718 2645A734 for C6.6 C4.4 1104D-E44TA Excavator Repair 320-0680 292-3780 new injector original new injector

Engineered specifically for C4.4, C6.6, 1104D, and 1106D diesel platforms, the 2645A718 common rail fuel injector delivers factory-grade metering accuracy through advanced electronic solenoid control. Heat-treated alloy steel construction and micro-machined nozzle orifices provide reliable atomization under the high combustion pressures found in these engines, maintaining OEM calibration and supporting compliant exhaust performance. The unit integrates as a direct-fit replacement for OE references 2645A718, 2923780, 3200680, 3069380, 10R7672, 2645A734, 2645A747, 2645A747R, 4226779M1, 10000-18886, and 775810, covering a wide service range for -powered industrial and off-highway equipment.

This injector is validated for application in wheeled excavators including the M315D, M316D, M318D, and M322D, as well as the 924H wheel loader, D6K bulldozer, TH337C and TH407C telehandlers, generator sets, and a broad lineup of agricultural machinery. Its optimized spray pattern improves combustion efficiency for higher power density, better cold-start behavior, reduced fuel consumption, and lower particulate output across construction, mining, material handling, power generation, and farming operations.

For long service life, operators should follow OEM fuel-filter replacement intervals, use ultra-low-contaminant diesel, drain water separators regularly, monitor rail pressure data, perform return-flow testing, inspect electrical connectors, and conduct cylinder cutout diagnostics during scheduled service. Common warning signs such as white smoke at startup, black exhaust smoke, excessive return fuel, rail pressure fluctuation, cylinder imbalance, poor acceleration, or rising fuel consumption typically indicate the need for injector inspection and replacement, helping prevent unplanned downtime and costly secondary damage.