2003 xlt

I have a 3" body lift kit and 1-3" suspension lift kit (described below) that I want installed on my 2003 Sport Trac XLT (121k miles, southern vehicle, no rust). The truck needs to have all of the cab mount insulators replaced, as well as new shocks, so I thought this would be the perfect...

Son rear ended someone. Liability means I am fixing it. I pulled the entire front end off and found this part. No idea what it is or where it came from. It was on the driver side to the side of where the radiator is. Any ideas?