1. I had to remove the exaust pipes from underneath the car.

2. To remove the Oxygen Sensors you need a special socket. I went to the my local auto parts store and rented this tool:

3. This is a picture of the broken sensor i had to replace

4. Install the new sensors with in the after catalytic coverter with the special socket

5. After you have installed the new Oxygen sensors, r-intstall the exhaust pipes.
DONE
courtesy: [url=http://www.nissansonly.com/gallery/thumbnails.php?album=5]www.nissansonly.com[/url]
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