Cummins original 4076912 Replacement for OEM Diesel Engine Fuel Injector Unit Injector Fits QSX15 ISX15 X15 ISX DC12 DT12 4-Series Truck Parts Cross Ref 4062568 4088725 original new injector

Built for the demands of the Cummins QSK15 platform, the 4076912 diesel fuel injector delivers dependable performance across ISX, QSX15 and related 15L heavy duty engine applications. This industrial grade fuel injection component is engineered to support accurate fuel metering, fine atomization and stable injection response, making it a practical service part for engines operating under continuous heavy load conditions. Common rail capability ranges from 1600 to 2600 bar depending on the platform.

The 4076912 injector serves a broad range of equipment, including excavators, wheel loaders, mining trucks, generator sets, oilfield equipment, heavy trucks, rail power units, rock drills, compressors, agricultural machinery and industrial power units. It cross references to authorized numbers such as 1521978, 4076963, 4076965, 4903028 and 570016, giving distributors strong catalog value and replacement compatibility. Final fitment must be confirmed by ESN, CPL, old injector number, connector type and injector appearance.

Injector service life depends on fuel cleanliness, correct filtration and proper installation. Replace fuel filters on time, drain water from the fuel system and avoid contaminated diesel. Common failure symptoms include hard starting, rough idle, misfire, white or black smoke, power loss and fault codes. Professional diagnosis should include fuel pressure testing, injector return testing, cylinder cut-out testing and ECM fault code reading before installation.