Volkswagen Audi Front Oxygen Sensor 1K0998262AD Replace Original Exhaust Monitor

Volkswagen and Audi 1.8T/2.0T front oxygen sensor, OEM number 1K0998262AD; mounted behind the exhaust manifold and before the catalytic converter; monitors oxygen in exhaust and feeds ECU to precisely control air-fuel ratio. Fits Magotan, Passat, A4L and other models; improves rough idle, rising fuel consumption, and weak acceleration. Installation difficulty moderate; labor time 0.5-1 hour; take care to protect threads during removal.