I own a 1985 528e. Problem is a noise and a slight jerk when accelerating. I think i already localized the problem, but i don't know the name of the part, and cannot imagine the procedure how to replace it. Let me describe the part. It is a bushing which goes vertically and connects rear axle carrier with the frame. This bushing is damaged, and when car is moving the inner cylinder is moving up and down and hits the frame. I hope somebody can help me.