Cummins 307425000 Fuel Injector Assembly

The Cummins 307425000 is a common rail fuel injector designed for Dongfeng Cummins ISDe and ISD series diesel engines. It features solenoid actuation for precise fuel delivery control under high pressure. This injector assembly replaces Cummins part numbers 307425000 and 5268408, and corresponds to Bosch component reference 0445120289. It is engineered to meet original equipment specifications for durability, emission compliance, and fuel economy in heavy-duty commercial vehicle applications. Technical validation includes flow rate matching, spray pattern verification, and response time testing per Cummins engineering standards. The injector body is constructed from high-strength alloy steel to withstand combustion chamber pressures. The nozzle needle and control valve are manufactured to micron-level tolerances for reliable operation across the engine operating map.