Caterpillar original Caterpillar 2645A747 diesel fuel injector replacement for OEM common rail system new injector original new injector

The 2645A747 fuel injector is a precision-engineered common rail diesel injection component designed for Caterpillar C4.4, C6, C6.4, C6.6, C7, and C7.1 engines, as well as Perkins 1104D and 1106D series engines. Built to OEM replacement standards, it is fully interchangeable with part numbers 320-0680, 292-3780, 306-9380, 317-2300, 326-4700, 10R-7672, 10R-7671, and 10R-7675, ensuring direct fitment across excavators 320D through 330D, wheel loaders 924H through 962H, backhoe loaders 420E through 450E, and motor graders 120M through 160M.

This solenoid-activated high-pressure injector delivers accurate fuel metering, optimized atomization, and an efficient combustion process. The precision-machined nozzle holes produce ultra-fine fuel particles with an optimized spray pattern, resulting in improved fuel economy, better engine response, reduced exhaust smoke, stable idle operation, lower exhaust emissions, and reliable power output even in heavy-duty industrial environments. High-temperature resistance and robust internal construction ensure stable performance under continuous high-load operation.

Common diagnostic indicators for a failing injector include difficult starting, engine hesitation, loss of torque, increased fuel consumption, abnormal exhaust smoke, reduced acceleration, excessive engine noise, and ECU fault codes. To maintain injector longevity, operators should use premium diesel fuel, prevent water contamination, replace fuel filters on schedule, monitor engine fault codes, inspect fuel pressure periodically, and clean fuel tanks as required. Backed by a 12-month warranty.