Cummins original Replacement for OEM 4077076 Common Rail Fuel Injector Fits QSK23 QSK60 QSK23 G3 Replaces 6560-11-1114 4088429 4088431 for Diesel Engines original new injector

Engineered for demanding heavy-duty diesel service, the Cummins 4077076 fuel injector delivers dependable performance for QSK23 engine platforms and is also associated with QSK60, QSK45, and QSK23 CM2350 K127 applications. The Cummins QSK23 is a 23-liter inline 6-cylinder, 4-cycle diesel engine featuring 170 mm bore, 170 mm stroke, turbocharged and charge-air-cooled construction, with well-servicing ratings of 760–950 hp / 567–708 kW and 2558–2897 lb-ft torque for oil and gas duty.

This injector is built around accurate fuel metering, high-pressure injection compatibility, and a stable spray pattern that supports combustion efficiency and engine protection. Durable construction and leakage control help maintain consistent output under continuous load, while strong cross-reference coverage—including 4062090, 4902827, 4902827NX, 4902827PX, 4077076NX, 4062090NX, 4088420, 6560-11-1114, and 4088431—simplifies fast replacement across mixed fleets. Listed as remanufactured, it suits oilfield service, generator maintenance, mining, construction machinery, industrial power units, and rebuild shops.

Service life depends on clean fuel, clean oil, correct filtration, water control, and proper installation. Replace fuel filters on schedule, drain the water separator, monitor smoke and starting performance, test return fuel flow, and scan ECM fault codes. Recommended diagnostics include fuel pressure testing, injector return flow testing, cylinder contribution testing, connector inspection, injector number verification, and fuel quality inspection.