how difficult is it to install an 02 sensor

Hi,

There are a total of four sensors. Two are heated oxygen sensors and two are air/fuel ratio sensors. All are located on the exhaust system.

If you look at the attached pics, they explain how to replace them and include pictures showing locations.

To get you started, here is a link that shows in general how they are replaced. Use this as a guide.

https://www.2carpros.com/articles/how-to-replace-an-oxygen-sensor

For directions specific to your vehicle, see the attached pics below.

I hope this helps. Let me know if you have other questions.

Take care,
Joe

See pics below.