Cummins original 4030346 Replacement Fuel Injector for QSKX15 QSX15 ISX15 X15 DT12.02 08 Diesel Engine Construction Machinery Excavator Spare Parts Cross Ref 4088725 1521978 original new injector

Engineered as a direct-fit injection component for the Cummins QSK15 engine family, fuel injector 4030346 delivers precise fuel metering and stable atomization across demanding duty cycles. It fits the Cummins QSK15, QSX15, ISX15, X15, and QSX15-G9 generator engine, and is designed to support engine power recovery, fuel economy, and lower misfire risk on high-hour industrial and off-highway platforms.

Built with heavy-duty construction, high temperature resistance, and reliable sealing, this injector suits diesel generator sets, mining trucks, excavators, wheel loaders, motor graders, rock drills, drilling rigs, oilfield power units, heavy trucks, marine auxiliary engines, and industrial power units. Compatible with electronic HPI and HPI-TP high-pressure injection systems, it serves power generation, mining, construction, oil and gas, marine auxiliary power, railway maintenance, fleet maintenance, and engine rebuilding operations worldwide.

Wide cross-number searchability, including references 1846348, 5634701, 4030348, and 4984854, supports fast identification for repair shops and export distributors. Fitment should 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, control contamination during installation, and perform professional diagnosis when hard starting, rough idle, black smoke, power loss, or injector circuit fault codes appear.