1992 Saturn SL1 Rear end suspension

Suspension problem
1992 Saturn SL1 Front Wheel Drive

What is the bar that is visible without having to get under the vehicle in the rear? It is attached to the body near the rear door and then attached behind the rear wheel assembly. There are buschings at both ends that the bolts go through. Is this a torsion bar? Or a rear control arm? Mine snapped. When you hold the tire in your hand you can move it from side to side. I need to get one from the salvage yard & not sure what it's called.