Original 571-0940 5710940 20R-4560 Brand New Fuel Injector Construction Machinery Excavator Parts for 323 GX Excavator Engine Parts original new injector

Engineered for demanding industrial diesel applications, the Fuel Injector 571-0940 delivers OEM-standard performance for C4.4, 3044, 3044C, 3054, and 3054C inline four-cylinder diesel engines. This brand-new high-pressure common rail injector assembly is cross-referenced with 10R-7220, 326-4706, and 326-4707, providing verified compatibility for fleet operators, equipment rebuilders, and industrial maintenance providers seeking dependable replacement components.

Manufactured from high-strength alloy steel with CNC precision machining, the injector ensures dimensional consistency and accurate fuel metering across continuous duty cycles. Hardened steel nozzle and internal valve assemblies deliver superior wear resistance, while advanced surface treatment protects against moisture, sulfur compounds, and fuel contaminants. Thermal stability supports uninterrupted operation under extreme temperatures, and the optimized spray pattern improves combustion efficiency, reduces fuel consumption, and lowers particulate emissions—addressing common issues such as hard starting from nozzle blockage, power loss from poor atomization, and excessive smoke from injector leakage.

This injector serves a broad range of heavy equipment applications, including excavators, wheel loaders, backhoe loaders, skid steers, tractors, harvesters, mining loaders, generator sets, and marine auxiliary engines. A structured preventive maintenance schedule—filter inspection at 250 hours, injector inspection at 500 hours, spray pattern testing at 1000 hours, and full calibration verification at 3000 hours—ensures long service life. Proper installation with new sealing washers and correct torque specifications guarantees optimal performance and leak-free operation.