Cummins original 4954648 Replacement Fuel Injector for X15 QSX15 ISX15 DC12.22 Diesel Engines Cross Reference 579251 1764364 4903451 for Construction Machinery Applications original new injector

Engineered for demanding fleet and industrial service, the Cummins 4954648 diesel fuel injector delivers reliable performance across the QSK15, QSX15, ISX15 and X15 15-liter heavy duty engine range. This common rail injection component supports platforms rated from 450 to 675 hp with 1650 to 2050 lb-ft of torque, providing accurate fuel metering and fine atomization for consistent combustion and stable injection response.

Built to withstand the pressures of common rail operation ranging from 1600 to 2600 bar, this injector offers heavy duty durability and dependable replacement compatibility. It cross references a wide catalog of related numbers including 1521978, 570016, 4954646, 4076963, 4903028, 4062568 and 4088723, giving distributors strong OEM search value and broad application coverage. Ideal for excavators, wheel loaders, mining trucks, generator sets, oilfield equipment, heavy trucks and rail power units across agriculture, construction, mining, oil and gas, and drilling operations.

Injector service life depends heavily on fuel cleanliness, correct filtration and proper installation. Replace fuel filters on time, drain water from the fuel system, avoid contaminated diesel and follow the engine maintenance schedule. Common failure symptoms include hard starting, rough idle, misfire, white or black smoke, power loss and fault codes. If metal debris is found, inspect the pump, rail, lines and return circuit before installing a replacement injector.