original For Fuel Injector 138-8756, Diesel Engine Fuel Injector, Common Fuel Injector, Excavator Accessories, Replacement for OEM 173-4059, Cross Reference 20R-0759, 232-1166 original new injector

Built for demanding diesel power platforms, the 138-8756 fuel injector assembly is engineered for 3412 Series engines, including 3412, 3412B, 3412C and 3412E variants. It serves industrial, marine, generator and power-unit engine configurations, with OEM references 138-8756 and 1388756 and replacement references 0R-8477 and 20R-2057. Manufactured to OEM-equivalent standards, it is designed to provide consistent fuel delivery and dependable operation under heavy-duty working conditions.

Within the diesel fuel system, pressurized fuel lifts the internal needle valve at the injector opening pressure and is delivered through precision nozzle orifices as a fine mist. This atomization supports efficient mixing with compressed air, helping optimize combustion, engine performance and power output. Documented product benefits include reduced fuel consumption, lower exhaust emissions and improved cold-start characteristics. Precision injection, high-pressure resistance, OEM-level calibration, corrosion resistance and industrial durability support a long service life, while quality testing before shipment helps ensure consistent supply for maintenance and replacement programs.

The injector is suitable for generator sets, marine vessels, offshore platforms, mining trucks, drilling equipment, oilfield power units, industrial power plants and construction machinery. For reliable service, use high-quality diesel fuel, replace fuel filters regularly, prevent water contamination and follow OEM torque specifications during installation. MOQ is one piece, with a 12-month warranty and export packaging available.