Genuine OEM Audi Knock Sensor with Harness, part number 079905377G. This sensor is crucial for engine management, detecting abnormal combustion (knocking) and sending signals to the Engine Control Unit (ECU) for timing adjustments. It is typically positioned on the front right side of the engine block. This precise electronic sensor with its integrated harness ensures accurate signal transmission. Using a genuine OEM knock sensor guarantees correct calibration and signal characteristics, vital for engine performance, efficiency, and longevity.