Description
This sensor is for all early AWD engines with a front Narrowband 02 sensor. If your mechanic says you need a new front 02 sensor or if you are having a persistant problem with vag come showing sensor B1S1 having either a heater or mechanical fault this is most likely the cause. If you need techincal assistance for a maintenance problem that you are unsure of a solution feel free to email or call the shop for immediate advice and assistance prior to purchasing.