Cummins 4921499 Fuel Pressure Sensor Assembly

The Cummins 4921499 fuel pressure sensor is designed for XPI high-pressure common rail fuel systems on 15.0L ISX and QSX engine platforms. It provides real-time fuel rail pressure feedback to the engine control module (ECM) for precise fuel metering and injection timing control. Constructed with a stainless steel housing and integrated electrical connector, the sensor withstands extreme pressure cycles and thermal shock in heavy-duty operating environments. The plug-and-play design matches the factory wiring harness connector and mounting interface, requiring no modification during installation. Engineered to meet OEM durability standards for vibration resistance and long service life. This part supersedes and interchanges with Cummins OEM numbers 3330998, 3330999, and 3408377. Compatible with Euro 3 emissions certified ISX and QSX15 engines equipped with CM570, CM870, CM871, and CM2250 control modules.