O2, Oxygen Sensor (Front) – OEM-Bosch for 2.7t (02 and up C5 A6/Allroad), B6-A4 1.8T (Rear)

These OEM-Bosch Front O2 sensors are factory replacements for the 2.7T w APB(02 only) and BEL engine code. They retain 100% OEM fitment. We highly recommend replacing both as a pair.

Please Note, when diagnosing your vehicles: Bank 1 = passenger’s side/right, and Bank 2 = driver’s side/left.

2 per vehicle, adjust the quantity to 2 at checkout if you want both.

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