Cummins 3087648-20 PT Fuel Injector Assembly

The 3087648-20 is a Pressure-Time (PT) fuel injector featuring Step Timing Control (STC) technology, engineered for Cummins 11-liter M11 series diesel engines including ISM11 and QSM11 variants. It utilizes a mechanical actuation mechanism driven by the engine camshaft, with electronic solenoid control for injection timing advancement. The injector body is constructed from high-speed steel and alloy steel components to withstand high-cycle fatigue and abrasive wear from diesel fuel contaminants. Nozzle spray pattern is calibrated for direct injection combustion chambers. This assembly replaces OEM part numbers 3087648, 3087648PX, 3406604, and 4914458. It is a non-common-rail unit designed for PT fuel systems on non-certified and certified construction, industrial, marine, and on-highway engine configurations.