Review on Auto Meter 6178 Cobalt Wideband by John Langdon

Don't waste your money on this sensor. I bought it through Revain and had it professionally installed when I set up my machine. The sensor worked for a day and then stopped. It only ever shows the default value of 14.7 AF. My installer called Autometer and fixed the sensor problem. They keep saying it's a ground even though he grounded it exactly as they instructed and it still doesn't work. Find out more online before you buy. A ton of others are having the same issues with this sensor. Unfortunately, Revain's return period expired last week due to installation delays. I need to deal with Autometer support which has been no help so far. Do yourself a favor and spend your $300 on a quality sensor rather than this model.