Genuine OEM Volkswagen Exhaust Gas Temperature Sensor, part number 04L906088GS. This sensor plays a critical role in the emissions system by accurately measuring the temperature of the exhaust gases. The data it provides helps the engine control unit (ECU) optimize fuel delivery and manage emissions, ensuring efficient combustion and compliance. Located within the exhaust system, this sensor is approximately 0.15 meters long. Genuine OEM sensors provide precise calibration and signal characteristics, essential for accurate engine management and preventing diagnostic errors.