Wholesale High Quality Engine Oem 4921517X Oil Pressure Sensor for Yutong Bus Spare Parts 4358810 4921517

The 4921517 Oil Pressure Sensor is an original equipment (OE) 3-wire active pressure transducer designed for use with Cummins ISM11, QSM11, M11, L10, and other heavy-duty diesel engines. As a core component of the engine’s electronic monitoring system, it continuously measures lubricating oil pressure and sends a linear voltage signal to the Engine Control Module (ECM), enabling real-time diagnostics and protection logic.

Engineered to meet the demands of modern commercial applications—including long-haul transport, construction machinery, power generation, and luxury coaches—this sensor ensures reliable operation under extreme conditions such as high vibration, temperature cycling, and exposure to oil mist and high-pressure washdowns.

With an output range of 0.5V to 4.5V proportional to pressure (0–150 PSI), this sensor enables precise control over engine derating and shutdown sequences when oil pressure drops below safe levels—protecting vital components like main bearings, camshafts, and turbochargers from catastrophic failure.