Genuine OEM Audi Knock Sensor with Harness, part number 06E905377M. This vital engine management component is responsible for detecting abnormal combustion, commonly known as engine knocking or pre-ignition. It sends precise signals to the engine control unit (ECU), allowing the ECU to adjust ignition timing and fuel delivery to prevent engine damage and optimize performance. The sensor is typically mounted directly on the engine block. Weighing 0.073 kg and featuring an integrated harness for reliable electrical connection, this part ensures accurate data transmission. Using a genuine OEM knock sensor guarantees precise calibration and signal characteristics, critical for maintaining engine health, efficiency, and preventing costly repairs.