Cummins 3054220 Fuel Injector Assembly

The Cummins 3054220 is a PTD DFF (Pressure Time Diesel Fuel) type mechanical fuel injector designed for the Cummins NT855 and NTA855 engine series. It operates within the Cummins PT fuel system, utilizing camshaft-actuated plunger and barrel assembly for fuel metering and high-pressure delivery through a multi-hole nozzle. This injector assembly incorporates the injector body, plunger, barrel, nozzle valve, and spring components calibrated to OEM flow rates. It is compatible with naturally aspirated and turbocharged variants including NH220, NH250, NT855, NTA855-M350 marine, NTA855-G1 generator drive, and NTC-290 industrial applications. The component features direct mounting to the cylinder head via a clamp and copper sealing washer. Cross-reference interchange includes Cummins part numbers 3054218, 3013725, 3064457, 3047991, 4914452, 3054219, 3047973, 3018816, and 4914453. Aftermarket remanufactured equivalents include R-3054220 and 3054220PX. Installation requires torque specification adherence and injector timing verification per Cummins service manual.