Caterpillar original 20R-8064 387-9433 557-7633 C9 Common Rail Fuel Injector for 330D 336D E330D E336D E340D Excavator original new injector

The CAT C9 Fuel Injector 20R-8064 is a precision-engineered diesel common rail injector designed for Caterpillar C9, C9 ACERT, and C9.3 series engines. Manufactured with CNC machined components, micron-level tolerance control, and a laser-calibrated nozzle assembly, this injector ensures consistent spray pattern and stable injection performance. Operating within a high-pressure common rail system exceeding 1,600–2,000 bar, it is fully compatible with the engine electronic control module for precise injection timing and metering. The part directly replaces 320-8064, 10R-8056, 10R-8055, and 10R-8057, covering a wide range of heavy equipment applications.

Built with hardened internal components, corrosion-resistant steel, and wear-resistant surfaces, the 20R-8064 injector delivers long service life under high temperature and pressure conditions. Its multi-hole nozzle design promotes thorough fuel atomization, improving combustion quality while reducing fuel consumption. The injector contributes to lower PM and NOx emissions, supporting environmental compliance for diesel-powered operations across regulated industries worldwide.

This injector is suitable for excavators including the 320D, 325D, 330D, and 336D, as well as wheel loaders 950H and 966H, motor graders, bulldozers, backhoe loaders, surface and underground mining equipment, haul trucks, crushers, generator sets, pump drives, compressors, drilling rigs, marine auxiliary engines, commercial vessels, irrigation systems, harvest equipment, large tractors, and general industrial power applications. Before installation, operators should verify the OEM part number, clean the injector bore, replace the sealing washer, and confirm ECM software compatibility. Proper torque on hold-down bolts, correct electrical connection, and post-installation leak and performance testing are recommended to ensure reliable operation throughout the full service interval.