What part is this? It came off, looks like it must of been a loose bolt. I am trying to find the bolt so I can pop it back on but I dont know where to start.

Thanks

 

Looks like the passenger side sway bar link. You need to get a nut for it and put it back together. If the nut backed off, I'd check and make sure the link is still good and didn't get messed up. If you do replace it, go with the moog over a stock one. It's a bit thicker and has the greasable zerk fittings on it so you can keep it lubed and working correctly.

 

Like the other guy said. Just put the end link stud back into the sway bar and put a new nut on. Aren't those supposed to be lock nuts?

 

Just an end link. Replace with mood or power grid if u got the monies

 

I can't recall if they are nylock nuts or not. Either way, to the OP, throw a lock washer on there for good measure..

 

There is no stock lock washer on an end link, it's not a nylock nut, it's just a nut. Re-install the nut, snug it down well, and you're done.