suspension problems. picture included

[ned2683]

OH boy when it rains it pours. went to get the car inspected to register came up with a bunch of stuff wrong with it. need to replace windshield, already replaced a brake hose, some exaust work, then tinkered with a wire for the high beams. As i was driving to the glass shop my rear tire blew out, so i then swapped a spare on, and the spare didn't have air in it (last time i check it did).

anyways got all the fixed. was driving around at night and heard something bounced underneath the car. i thought it was a rock i hit, but then the front end was acting kinda weird. well let the picture do the talking:





whats the part called that i am missing there? is this expensive to fix? I might end up selling the car for parts since i was offered another car. this is on a 84 300SD W126. thanks for any help, ironically today is my birthday but i been having bad luck all day.