Powerflex Polyurethane Bush kit for Saab 9-5 (1998-2010) YS3E Rear Anti Roll Bar Bush 17mm - PFR66-211-17 - PFR66-211-17 fits Aero models only. Use PFR66-210-17 for non-Aero models. - Bush Size: 17mm - PRICE IS PER CAR KIT, NOT per bush. Powerflex usually price their bushes singly, but we have combined the QTY and price to keep it simple for you!