original 10R-4764 Diesel Fuel Injector for C9 Engine 330D E330D 336D E336D 336D2 Excavator Replacement OEM 293-4071 10R-7221 293-4072 Fuel Injector Parts original new injector

Engineered specifically for the demanding operating environments of C9 and C9 ACERT diesel engines, this common rail fuel injector (OE 10R-4764) delivers precise fuel metering and reliable performance across construction, mining, marine, and power generation applications. Fully interchangeable with cross reference numbers 254-4339 and 387-9433, the injector is a direct replacement solution for fleet operators, OEM service centers, and industrial maintenance providers seeking consistent quality and long-term durability.

The 10R-4764 injector features precision-machined internal components, OEM calibration, and advanced atomization technology that supports high-pressure common rail operation. Corrosion-resistant construction extends service life, while stable spray patterns contribute to improved combustion efficiency, enhanced engine power output, reduced fuel consumption, lower smoke emissions, and improved cold-start performance. It is widely applied in 330D and 336D Excavators, 966H and 972H Wheel Loaders, 140M Motor Graders, 730 Articulated Trucks, generator sets, marine propulsion systems, and industrial power plants.

For optimal service life, use high-quality diesel fuel, replace fuel filters regularly, monitor rail pressure, and avoid water contamination. Installation requires disconnecting battery power, removing the valve cover and existing injector, cleaning the injector bore, fitting new sealing components, torqueing per specification, and performing ECM calibration where required. Diagnostic support includes injector balance testing, ECM fault code review, fuel rail pressure verification, return flow measurement, and cylinder cutout testing for reliable field troubleshooting.