Genuine OEM Volkswagen Nox Sensor, part number 04L907807FG. This sensor is a critical component of the exhaust system, responsible for measuring nitrogen oxide (NOx) emissions. It is typically located in the exhaust stream. The sensor weighs 0.164 kg and has dimensions of 0.2m x 0.14m x 0.05m. Genuine OEM NOx sensors are precisely calibrated to ensure accurate readings for the engine control unit, facilitating optimal emissions management and compliance.