There is a rattling coming from under rear deck. I have found where it’s coming from but do not know the name of the part. The part the noise is coming from is circled in yellow.. any help with the part name thanks

 

isn't that your upper strut mount circled in yellow? The 3 bolts and the circular mount?

 

Thanks! yea im getting rattling from inside of it. Any suggestions ? thanks

 

Take the 3 nuts off and see what under the cap looks like. The strut mount might have come loose. Or if you had the shocks changed from original it could be that whoever did it left an old nut or washer in there that's rolling around.