original 2645A747 10R7672 32E61-00020 312-5620 Diesel Common Rail Injector Replacement for C4.4 Excavator  original new injector

The 2645A747 fuel injector is engineered specifically for C4.4, C6, C6.4, C6.6, C7, and C7.1 diesel engines, including the 1104D-E44T, 1104D-E44TA, 1106D-E66TA, 1106D, and 1104D variants from the 1100 and 1106 series. Its electronically controlled high-pressure common rail design integrates seamlessly with the engine ECU, which calculates precise fuel quantity based on real-time inputs such as engine speed, load, boost pressure, coolant temperature, and throttle position. Precision-machined nozzle holes produce ultra-fine fuel particles, delivering optimized atomization and efficient combustion across industrial, generator, and heavy-equipment operating cycles.

This injector provides direct interchange compatibility with authorized OE references 2645A747, 2645A718, 2645A734, 2645A737, 2645A738, 2645A746, 2645A749, 2645A751, 2645A752, 2645A753, 2645A754, 2645A755, 2645A756, 2645A757, 320-0680, 292-3780, 306-9380, 317-2300, 326-4700, 10R-7672, 10R-7671, 10R-7675, 32F61-00062, and 32F61-00060, ensuring straightforward installation on -powered excavators, wheel loaders, backhoe loaders, motor graders, compactors, pavers, generator sets, and marine auxiliary engines without modification.

Operationally, the 2645A747 improves fuel economy, sharpens engine response, reduces exhaust smoke, and stabilizes idle under heavy-duty load conditions. Its high-temperature-resistant construction and heavy-duty reliability extend service life while lowering overall maintenance cost. To preserve performance integrity, operators should use premium-quality diesel fuel, avoid water contamination, replace fuel filters at regular intervals, monitor ECU fault codes, inspect fuel pressure periodically, and clean fuel tanks as required.