Cummins original Replacement for OEM 4954646 Diesel Fuel Injector Cross Ref 570016 1499257 1529790 Fits QSX15 ISX15 X15 Engines for Construction Machinery original new injector

Engineered for demanding heavy-duty service, this Cummins fuel injector 4954646 delivers precision fuel metering and high-pressure injection capability across the QSK15, QSKX15, QSX15, ISX15 and X15 15L diesel engine family. Its stable atomization and electronic control compatibility support consistent combustion, engine power recovery and improved fuel economy, making it a dependable original replacement injector for global diesel engine repair operations.

The heavy-duty construction provides high temperature resistance, reliable sealing and tested flow performance, helping lower misfire risk under load and reducing common issues such as hard starting, rough idle, black smoke, power loss, high fuel consumption and excessive return fuel. Broad cross-number searchability against references including 4903028, 4076963, 1521978 and 570016 simplifies identification for repair shops, fleets and B2B buyers sourcing accurate replacement parts.

Suitable for diesel generator sets, mining trucks, excavators, wheel loaders, drilling rigs, industrial compressors, heavy trucks and marine auxiliary engines, this injector supports both original equipment service and engine rebuild programs. For lasting performance, use clean diesel fuel, replace fuel filters on time, keep the high-pressure rail clean, control contamination during installation and perform professional diagnosis when abnormal symptoms appear. Export-friendly supply and B2B catalog-friendly product data streamline procurement.