Genuine OEM Audi Knock Sensor with Wiring Harness, part number 06A905377C. This sensor is crucial for engine management, detecting abnormal combustion (knocking or pre-ignition) and sending precise signals to the engine control unit (ECU). The integrated wiring harness ensures a direct and reliable electrical connection. Choosing genuine OEM ensures accurate sensor calibration and signal characteristics, vital for protecting the engine from damage and maintaining optimal performance and fuel efficiency.