Caterpillar original  C9 Engine Common Rail Diesel Fuel Injector 320-2940 10R-4764 293-4071 10R-7221 293-4072 10R-7222 293-4073 10R-7223 293-4074 328-2573 328-2574 original new injector

The Caterpillar CAT C9 Fuel Injector 320-2940 is engineered as a high precision diesel fuel injection component designed to meet OEM calibration standards for the Caterpillar C9 and C9 ACERT engine platforms. Featuring advanced atomization performance and high temperature resistance, this injector delivers stable fuel delivery and consistent spray patterns under demanding operating conditions. The assembly incorporates corrosion protection materials and robust internal construction, ensuring long service life and excellent durability in harsh environments typical of construction, mining, marine, and power generation applications. Each unit is 100% flow bench tested to verify performance consistency and reliability before shipment.

This fuel injector serves as a direct OE replacement for Caterpillar C9 engines used in excavators, wheel loaders, motor graders, generator sets, marine engines, and industrial power units. It is cross-referenced with part numbers 320-2940, 3202940, and 10R-7675, allowing seamless integration with existing fuel systems without modification. The injector supports high pressure diesel fuel injection and is built to maintain precise fuel metering, which contributes to optimized combustion efficiency and reduced exhaust emissions across the supported engine family.

To maximize service life, operators should use high-quality diesel fuel, replace fuel filters on a regular schedule, drain water separators frequently, monitor fuel pressure during routine checks, and conduct periodic injector testing. Common fault indicators include hard starting caused by injector leakage or nozzle wear, excessive smoke resulting from carbon deposits or poor spray pattern, and reduced power linked to fuel delivery imbalance or internal wear. Backed by a 12-month warranty, this C9 fuel injector provides a dependable replacement solution for heavy equipment maintenance programs.