Cummins original 4088660 Engine Fuel Injector QSX15 ISX15 X15 Diesel s Fits Construction Machinery Excavator Auto Cross Ref 4076963 4954648 original new injector

Engineered for demanding fuel delivery in the Cummins 15L platform, the 4088660 diesel fuel injector serves the QSK15, QSX15, ISX15 and X15 engine families across heavy-duty and off-highway operations. This injector supports precision fuel metering, stable atomization and reliable sealing, helping restore engine power, control fuel economy and lower misfire risk under continuous industrial loads.

Built with heavy-duty construction and high temperature resistance, the unit is suited to diesel generator sets, mining trucks, excavators, wheel loaders, motor graders, rock drills, industrial compressors, drilling rigs, oilfield power units, heavy trucks, marine auxiliary engines and rail equipment. It carries broad cross-number searchability, including references 4088723, 4954434, 1481827, 4088665, 579251, 1846350 and 3087560, making it repair-shop-friendly and easy to match through B2B catalog data. Fitment must be confirmed by engine serial number, CPL, old injector number, injector body marking and fuel system type.

For long service life, use clean diesel fuel, replace fuel filters on time, drain the water separator, inspect fuel lines and connectors, and control contamination during installation. When symptoms such as hard starting, rough idle, black smoke, power loss, high fuel consumption or injector circuit fault codes appear, professional diagnosis is recommended. Export-friendly supply and tested flow performance make this injector a dependable choice for global aftermarket and diesel engine repair.