Cummins original 1846351 Replacement Common Rail Fuel Injector Assy for Scania QSX15 ISX15 DC12.15 DC12.18 DC12.23 Diesel Engines Cross Ref 579264 579251 4954648 1764365 original new injector

Engineered for the demanding 15-liter Cummins platform, this diesel fuel injector 1846351 supports the QSK15, QSKX15, QSX15, ISX15 and X15 engine families used across agriculture, construction, mining, oil and gas, rail and well-servicing duty cycles. Built to original type standards, it delivers controlled diesel fuel into the combustion chamber at the correct timing, quantity and spray pattern, promoting smooth starts, steady idle, strong torque, reduced smoke and improved fuel efficiency.

Precision fuel delivery and fine atomization make this injector well suited to heavy-duty repair channels where reliability matters. Its broad cross-reference coverage—including 1481827, 4954646, 4954648, 570016, 1499714, 4088723 and 1521977—provides strong matching value for diesel parts distributors, repair shops, fleet maintenance companies and industrial engine rebuilders. Optional testing support and global aftermarket supply flexibility help service teams source with confidence for trucks, excavators, generator sets and mining equipment.

Correct fuel injection is central to resolving hard starting, rough idle, black or white smoke, power loss and high fuel consumption. Proper diagnosis should include fuel pressure testing, return-flow testing, ECM fault-code reading, cylinder cut-out testing and visual inspection. To protect performance, use clean diesel fuel, replace fuel filters on time, drain the water separator and keep the tank and fuel lines clean, always following the exact engine manual and duty cycle.