Left.2007-11. Plate spacer. Right.2007-11. A component that takes up the Space between the Exhaust System Hanger and it's attaching point. Exhaust Stud Spacing Sleeve. Exhaust System Part that holds the Exhaust parts to the vehicle. Sleeve that fits in Hanger to prevent over torquing. Adjust plate ring. Bracket Sleeve. Bushing. Exhaust Stud Spacing Sleeve. Exhaust System Hanger Sleeve. Pipe nut. Tube.