Your vehicle's O2 sensor plays a significant role in its performance and if it's faulty, it's not something you should ignore. Here's what you need to know.

However, while Weatherhead sockets tend to come in a shallow well design, O2 sensor sockets usually have a deep well design. These devices are meant for use with automotive O2 sensors.

There's a special O2 sensor socket that should be used, and you have to be certain of the sensor location. On the 4.7-liter V-8, there are four oxygen sensors.