Cummins original Replacement for OEM 4087886 Diesel Engine Fuel Injector Compatible with QSK45 QSK60 K19 KTA19 QSK19 Engines Cross Reference 4010025 4928347 Excavator Accessory original new injector

Built for the demanding operating cycles of the Cummins QSK23 platform, the 4087886 fuel injector assembly delivers the fuel metering precision and high-pressure durability that severe-duty diesel applications require. Engineered as a direct OEM-reference and reman-supply component, this injector supports the QSK23 High Pressure Injection HPI-PT full-authority electronic fuel system, which is capable of injecting fuel at 29,000 psi for reliable combustion under continuous heavy load.

The QSK23 is a 23-liter inline 6-cylinder heavy-duty engine rated at 760–950 hp / 567–708 kW in well-servicing duty, with G-Drive ratings at 531–736 kW prime and 603–816 kW standby. This injector features heavy-duty construction, fine atomization, heat resistance, and sealing reliability, and it also cross-references injector groups associated with QSK45, QSK60, QSK19, and sometimes QSK15. Broad cross-reference support and optional test support simplify sourcing and verification.

Typical applications include large mining excavators, generator sets, oilfield power units, construction machinery, rail and intermodal power systems, marine auxiliary power, and fleet spare-parts stock. Reman supply options and export packaging make it well suited to wholesale and maintenance programs. Final fitment must be verified by engine serial number and old injector number, using part-number verification, ECM scanning, and return flow testing to confirm correct application.