奔驰氮氧传感器 A0081539828 5WK96642B 柴油系统专用

Mercedes-Benz nitrogen oxide sensor directly replaces OEM number A0081539828 and is compatible with A0101539328 and 5WK96642B; very broad compatibility. It monitors NOx in diesel exhaust and sends signals to the ECU to optimize urea injection, ensuring emissions compliance. Fits Mercedes-Benz W166, W205, W212 with OM642 or OM651 diesel engines. After installation, it addresses excessive tailpipe emissions, torque limit, and warning lights, and can restore power and fuel economy. If the car shows weak acceleration, sudden fuel consumption increase, or dashboard displays “emission system fault,” sensor aging is likely; replace promptly.