Cummins original 4307475 Common Rail Fuel Injector for Cummins ISG12 ISG Diesel Engine Spare Parts High Performance Injection Valve Replacement OEM 5491515 4307468 original new injector

Engineered for demanding fleet and industrial service, the Cummins Dongfeng diesel fuel injector 4307475 delivers factory-grade metering accuracy across a broad range of high-pressure common rail engine platforms. Built to OEM calibration standards and available in both new and remanufactured configurations, this injector supports consistent combustion, cleaner emissions, and stable power output for operators managing large mixed fleets and equipment.

Constructed from high strength alloy steel, the unit features a precision machined nozzle, high-pressure solenoid control, hardened internal components, and a corrosion resistant alloy body for extended service life. Every injector undergoes 100% flow and leak bench testing to verify spray pattern, sealing integrity, and delivery volume before shipment, and is backed by a 12-month warranty. It fits Cummins ISG, QSG, ISDe, ISBe, ISB, QSB, and EQB/EQD engines used in Dongfeng trucks, buses, generator sets, and construction machinery.

For optimal reliability, replace the fuel filter every 15,000–20,000 km, inspect injector function every 60,000 km, and perform flow testing every 80,000–100,000 km, alongside annual ECU diagnostics. Use industry-standard diesel (ULSD / EN590 / ASTM) and keep the fuel system free of water contamination. This injector resolves common faults including Fuel Rail Pressure Sensor Lo, Injector Circuit Open, Cylinder Contribution Fault, and Fuel Quantity Deviation.