Cummins original 4077076 Diesel Engine Fuel Injector QSK23 QSK60 QSK23 G3 Replacement for OEM 4062090 Common Rail Fuel Injector Cross Reference 4088431 4088416 original new injector

Engineered for the final stage of diesel fuel delivery, the Cummins 4077076 fuel injector is an original-standard replacement option for selected QSK23-platform engine service. It meters fuel, controls injection timing, atomizes diesel into fine droplets, controls return fuel leakage and helps maintain cylinder balance. Correct injection quantity, pressure and spray pattern support complete combustion, while injector condition directly influences power output, exhaust smoke, fuel economy, engine response, cylinder temperature and durability.

The primary application is the Cummins QSK23, a 23-liter, inline six-cylinder, four-cycle diesel engine with 170 mm bore and stroke, turbocharging and charge-air cooling. Its well-servicing ratings are listed at 760–950 hp (567–708 kW), making the platform relevant to oil and gas, well servicing, generator maintenance, mining equipment repair, construction machinery, industrial power units, marine auxiliary power and engine rebuild operations. High-pressure injection supports strong response and efficient fuel use when the correct injector is matched to the engine.

For sourcing, 4062090 and 4902827 are the strongest public cross-references; 4902827NX, 4902827PX, 4077076NX, 4062090NX, 4088420, 6560-11-1114 and 4088431 are additional market references. Public listings also associate 4077076 with QSK60 and, in some cases, QSK45, but these references do not guarantee interchangeability. Before shipment, confirm fitment using the engine serial number, CPL, ECM calibration, original injector marking and injector photographs to support accurate B2B ordering and reduce application mismatch.