Volkswagen Touareg Audi Q7 TDI NOx Sensor 059907807E 5WK96687

For VW Touareg and Audi Q7 TDI diesel models, NOx sensor OEM 059907807E, compatible with 5WK96687. Monitors NOx in exhaust in real time and feeds data to ECU to optimize combustion and emission control, especially for Euro IV and Euro V models. Solves check engine light, power loss, or abnormal fuel consumption. If acceleration is weak, black smoke appears, or the instrument panel shows "emissions system fault," sensor may be failing and replacement will restore performance.