Cummins original 4954644 Diesel Engine Fuel Injector Replacement for OEM Compatible with QSX15 ISX15 X15 Truck Engines Fits Ref Part Nos 4088301 4928262 4088327 original new injector

Engineered for demanding 15L-class powertrains, the Cummins fuel injector 4954644 delivers dependable fuel delivery across the QSK15, QSKX15, QSX15, ISX, ISX15 and X15 engine families. As an XPI common rail component, it supports precision fuel metering, high-pressure injection capability and stable atomization, helping restore rated engine power while supporting fuel economy and lower misfire risk in continuous-duty applications.

Built with heavy-duty construction, high temperature resistance and reliable sealing, this injector is designed for electronic control compatibility and tested flow performance. It carries the primary OE number 4954644 and is cross-referenced to 4954644PX, 4954644RX, 4062568, 1846348, 4030346 and 4954646, giving repair shops and distributors reliable cross-number searchability. It suits generator sets, mining trucks, excavators, wheel loaders, drilling rigs, marine auxiliary engines and industrial power units.

As an original replacement part addressing symptoms such as hard starting, rough idle, black smoke, power loss, high fuel consumption, injector circuit fault codes and excessive return fuel, this component is supported by export-friendly supply and B2B catalog-friendly product data. For long service life, 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.