Zhonglutong 0445120048 Fuel Injector Assembly

This common rail fuel injector is manufactured by Zhonglutong (China Lutong) as a direct replacement for Bosch part number 0445120048. It is designed for high-pressure common rail fuel systems equipped on heavy-duty diesel engines including Cummins ISLe, ISBe, QSB6.7, and QSL9 series. The injector features a solenoid-actuated nozzle assembly calibrated for precise fuel metering and atomization at operating pressures up to 1800 bar. Internal components include a hardened needle valve, precision-machined control valve, and multi-hole nozzle tip constructed from high-speed tool steel to withstand abrasive wear and thermal cycling. The injector body incorporates a high-strength alloy steel housing with corrosion-resistant surface treatment. Technical validation includes dynamic flow testing at ±3% tolerance, seat leakage verification below 0.3 cc/min at 400 kPa, and electrical coil resistance inspection. The unit is supplied as a complete assembly including the injector nozzle, solenoid connector, and sealing washers. Compatible with Dongfeng Cummins and other OEM installations in medium/heavy trucks and construction machinery such as hydraulic excavators and wheel loaders.