Caterpillar original  10R-7674 Common Rail Fuel Injector 320-0680 10R-7672 320-0677 10R-7671 320-0688 10R-7939 for C6.4 C6.6 E320D Excavator new original new injector

The Original Caterpillar C6 Injector 10R-7674 is engineered as a direct OEM replacement component for CAT C6 diesel engines, also compatible with the C6.4 platform. Built to original equipment manufacturing standards, this fuel injector assembly delivers precision fuel delivery and high injection accuracy, supporting stable combustion characteristics across a wide range of operating loads. Each unit is factory performance tested to verify flow rate, spray pattern, and sealing integrity before shipment.

Designed for demanding industrial environments, the 10R-7674 injector features excellent thermal stability and heavy duty industrial performance, making it suitable for excavators, wheel loaders, backhoe loaders, motor graders, generator sets, industrial power units, marine propulsion systems, and agricultural machinery. The assembly is interchangeable with part numbers 326-4700, 320-0680, and 2645A749, providing a reliable replacement option for fleet maintenance and engine overhaul operations.

To maximize service life and maintain optimal injector performance, operators should use high-quality diesel fuel, replace fuel filters at recommended intervals, prevent water contamination in the fuel system, and monitor injector behavior for early signs of deviation. Common diagnostic indicators include white smoke from low injection pressure or nozzle wear, black smoke from blockage or excessive delivery, and power loss linked to fuel starvation, injector malfunction, or contamination.