The oil pressure sensor, also known as an oil pressure sender or switch, is a crucial engine component responsible for measuring the oil pressure within the engine's lubrication system.
It provides real-time data to the engine control unit (ECU) to ensure that the engine is operating within safe oil pressure ranges. Maintaining proper oil pressure is vital for the engine's longevity and performance.
Compatibility:
These Cummins oil pressure sensors are compatible with the QSM11, ISM11, and M11 diesel engines. These engines are widely used in various applications, including trucks, buses, construction equipment, and power generation units.
Part Numbers:
Cummins offers different part numbers for these oil pressure sensors. The part numbers you mentioned - 4921487, 3080406, 3075273, 3072491, 3654108, and 3071575 - may correspond to various engine configurations or production batches. It's essential to choose the correct part number to ensure compatibility with your specific engine model.
Operating Range:
These oil pressure sensors typically operate within a specified pressure range, which can vary depending on the engine model and application. They are designed to withstand the high pressures associated with diesel engines, ensuring accurate and reliable readings.
Electrical Specifications:
Cummins oil pressure sensors are electrical devices that generate signals to communicate with the engine's ECU.
They usually feature standardized electrical connectors, such as a two-pin or three-pin connector, to ensure easy integration into the engine's wiring harness.
Installation and Maintenance:
Proper installation and routine maintenance of the oil pressure sensor are essential for reliable engine performance. These sensors are typically threaded into the engine block or oil filter housing. Regular checks and cleaning can help prevent oil contamination or sensor damage.
Monitoring and Safety:
The data provided by the oil pressure sensor is critical for the ECU to make real-time decisions about engine operation. If the oil pressure falls below a safe threshold, the ECU may trigger a warning or take preventive measures, such as reducing engine speed or shutting down the engine, to prevent damage.
Aftermarket Availability:
These Cummins oil pressure sensors are commonly available as genuine Cummins parts and in the aftermarket. It's essential to ensure that any aftermarket sensor meets the same quality and performance standards as the original Cummins part to avoid potential issues.
