Cummins C4921686 Position Sensor Assembly

The Cummins C4921686 is a hall-effect crankshaft position sensor designed to provide precise engine speed and position data to the ECU for optimal fuel injection timing and ignition control. It operates on a 5V reference voltage supply and outputs a digital square wave signal compatible with Cummins CM850 and CM2150 control modules. Constructed with a high-temperature resistant ABS plastic housing and stainless steel mounting flange, the sensor features a sealed connector interface to withstand vibration, moisture, and thermal cycling in heavy-duty applications. Primary OEM cross-references include C2872279, 3408531 (Hyundai HCE), 4921686, 5594276, and 6754-81-9200 (Komatsu). Direct fitment for Cummins QSB3.3, QSB4.5, QSB6.7, ISF3.8, ISDE, ISBe, and ISLe engine platforms.