Original Fuel Injector Assembly 387-9438 20R-8060 387-9439 20R-8061 for C9 Engine Excavator Truck Auto parts Auto original new injector

Engineered for heavy-duty operation, the 20R-8061 common rail fuel injector delivers OEM-grade fuel metering performance for C9, C9 ACERT, and C9.3 diesel engines. This injector assembly is directly interchangeable with cross-reference part numbers 287-8061, 10R-8020, 147-2412, and 268-8061, ensuring reliable replacement compatibility across a broad range of industrial platforms. Constructed with hardened alloy steel bodies, precision-ground nozzle tips, and heat-treated internal components, the injector is built to withstand extreme in-cylinder pressures, high temperatures, and continuous industrial duty cycles.

The 20R-8061 supports accurate fuel metering, improved fuel economy, reduced engine knock, stable idle operation, and fast response time while helping lower exhaust emissions. It fits equipment models including 330C, 336D, 345D, 349D, 950H, 966H, 972H, 980H, CT660, and CT680, making it suitable for excavators, wheel loaders, motor graders, articulated trucks, generator sets, and marine propulsion applications. Corrosion-resistant surfaces and high-cycle fatigue resistance extend service life in construction, mining, oil & gas, agricultural, and power generation environments.

For optimal performance, clean the injector bore before installation, replace sealing washers and O-rings, inspect fuel lines and injector harness, calibrate the ECU if required, and perform a leak test with injection timing verification. Use clean diesel fuel, OEM-quality filters, and drain water separators regularly. Monitor diagnostic indicators such as excessive white, black, or blue smoke, poor cold starts, high exhaust temperature, engine derate, DTCs, and fuel rail pressure errors.