original 267-9722 Common Rail Diesel Fuel Injector for C7 C9 330D 336D Excavator Engine Spare Part Replacement for OEM original new injector

Engineered exclusively for the C9 platform, this HEUI fuel injector carries the primary OE designation 267-9722 and is fully validated against C9 ACERT, industrial, generator, and marine engine variants. It is a direct-fit replacement for 330D, 336D, 950H, 966H, 972H, 140M, 160M, 725, and 730 equipment, as well as C9 generator sets and industrial power units, ensuring seamless integration without modification.

The injector operates on the HEUI principle, where engine oil pressure intensifies fuel pressure before injection. ECM signals activate the solenoid, driving the intensifier piston to generate precise high-pressure fuel delivery through the nozzle into the combustion chamber. This mechanism delivers accurate fuel metering, optimized combustion efficiency, improved engine power output, reduced fuel consumption, and lower exhaust emissions under heavy-duty operating conditions.

Installation requires a clean injector bore, replacement of O-rings, new sealing washers, and strict adherence to torque specifications, with injector coding performed when required. Operators should use OEM-grade fuel filters, drain water separators routinely, and conduct periodic injector balance testing to sustain long service life. Authorized cross references include 267-9710, 267-9717, 293-4074, 328-2580, 387-9431, 10R-7223, and 10R-9003, supporting flexible procurement and consistent aftermarket performance across global markets.