奔驰A0009059603氮氧传感器5WK96681E，精准排放监控

Mercedes A0009059603 NOx sensor (model 5WK96681E), designed for chassis with diesel engines on W204, W212, W166, etc., direct replacement without modifications. Core function is to monitor exhaust NOx concentration in real time and send data to engine computer to precisely control emissions. After installation, MIL issues and emission exceedance or torque limit problems can be resolved. If accelerating is weak, fuel consumption increases, or emission warning light comes on, replace this sensor promptly.