Caterpillar original Replacement Fuel Injector 320-0690 for CAT C4.4 C6.6 C6.4 Engines, Cross Reference 10R-7938, 320-0677, for Construction Machinery Excavator with 10R-7671 original new injector

Precision fuel delivery is the backbone of every high-output diesel engine, and the Caterpillar C6 Series Fuel Injector 320-0690 (OE 3200690) is engineered to deliver exactly that. Designed for Caterpillar C6.6 Series engines, this industrial-grade injector supports a wide range of heavy-duty equipment, including excavators, wheel loaders, dozers, graders, industrial generators, and mining machinery — a dependable OEM-quality replacement for distributors, repair shops, and fleet operators maintaining CAT-powered equipment.

Operating within a common rail high-pressure diesel fuel system, the 320-0690 receives pressurized fuel via the common rail and uses electronically controlled actuation to precisely meter injection timing and duration. Its multi-hole nozzle atomizes fuel directly into the combustion chamber, promoting complete combustion — improving engine efficiency, torque response, idle smoothness, and emissions performance. Manufactured from alloy steel with precision engineering, the injector is calibrated to deliver a consistent spray pattern and stable combustion across all load ranges, meeting or exceeding Caterpillar OEM specifications.

For sourcing convenience, this injector is backed by a comprehensive cross-reference database covering remanufactured number 10R-7673, interchange numbers 292-3790 and 306-9390, and industrial tags 2645A719, 2645A735, and 2645A749 — simplifying identification across supplier networks. The unit is serviceable and remanufacturable following certified procedures, lowering total lifecycle cost. Whether you supply parts for construction, mining, agriculture, marine generators, or industrial power systems, the CAT C6 Series injector 320-0690 offers global compatibility and proven heavy-duty performance.