Cummins 2872277 Crankshaft Position Sensor

The Cummins 2872277 is a Hall-effect crankshaft and camshaft position sensor designed for precise engine timing and fuel injection control. It features an offset mounting flange and a rectangular 3-pin connector, often supplied with a pigtail harness for direct plug-in installation. This sensor monitors the rotational speed and position of the crankshaft, transmitting critical data to the Engine Control Module (ECM) for synchronization of fuel injection and ignition events. Constructed with a high-temperature resistant polymer housing and sealed to IP67 standards for protection against moisture, oil, and vibration in heavy-duty environments. It supersedes part numbers 3408529 and 4921684, and is replaced by the current production part 5594275. Compatible with Cummins B, ISB, QSB, C, ISC, QSC, L, ISL, QSL, M11, ISM, QSM, ISX, and QSX engine families. Applications span on-highway heavy-duty trucks such as Dodge Ram 2500/3500, vocational trucks, construction equipment including Komatsu excavators, and industrial power generation units.