Genuine OEM Audi Exhaust Gas Temperature Sensor, part number 057906088AQ. This critical sensor is positioned within the exhaust system, typically close to the engine or catalytic converter, to accurately measure the temperature of the exhaust gases. The data it provides is vital for the engine control unit to optimize fuel injection, ignition timing, and manage emissions systems. Weighing approximately 0.13 kg and featuring a cable length of about 0.75 meters, this sensor is designed for precise installation. Using a genuine OEM sensor ensures accurate readings, proper calibration, and reliable operation, which are essential for maintaining engine efficiency and compliance with emissions standards.