Need Help Identifying a Part
 

Hello ,

If any one can help it would be great.

Recap: Yesterday I noticed something hanging from underneath my car. It was a pan like object. Later in the day a co-worker was able to quicklywiggle it off with ease. My car is driving as normal no problems. I was able to take a picture of the part. I just want an idea of what it is so I am not duked when I go to the repair shop. They try to take advantage of women to often. Also if you can identify the part is this an expensive job?

it looks like the heat sheild that goes around the catalytic coverter