Re: Need to know what this part is called ASAP!!!
First thing to do is see if it's on the insurance company's estimate. If not, have the shop call the adjuster to write a supplement. Very common process.
If it is on the estimate, and you paid your deductible, the insurance company may be able to help.
If the shop 'saved' you your deductible, you may have found where they saved it. You may have to fork over your deductible to get it fixed.