Genuine OEM Volkswagen Front NOx Sensor, part number 03N907807Q. This critical sensor is responsible for monitoring nitrogen oxide (NOx) levels in the exhaust gas, playing a vital role in emissions control. It is positioned in the front section of the exhaust system, specifically for Left Hand Drive (LHD) vehicle configurations. Weighing 0.316 kg, this sensor provides accurate and reliable readings. Using a genuine OEM sensor ensures precise calibration and signal characteristics, which are essential for proper engine management and compliance with emissions regulations.