Upstream Air Fuel Ratio O2 Oxygen Sensor For 00-05 Audi A4 Quattro VW Passat 1.8T

Becareful when you buy this it is advertised as an upstream o2 sensor but for my 03 VW Passat 1.8t it was not as the site said it would fit and the picture definitely is of an upstream sensor but I received was either a downstream or not for my car at all.