Mercedes-Benz Oxygen Sensor A0035427018 Universal Front/Rear Precise Air-Fuel Ratio Detection

Mercedes W164, W221 and C/E-Class oxygen sensor A0035427018, mounted on exhaust manifold or exhaust pipe, for real-time monitoring of exhaust oxygen content and feedback to ECU to achieve precise closed-loop air-fuel control. This sensor is compatible with A0045420818 and A0045420718 as well; front and rear positions are universal, effectively improving combustion efficiency. Installation difficulty medium; professional technician recommended; time 0.5-1 hour; avoid thread damage.