Powerflex Polyurethane Bush kit for BMW E53 X5 (1999-2006) Front Lower Radius Arm To Chassis Bush - PFF5-901 - This part replaces OE numbers: 31126769715 and 31103412781. - Bush Size: - 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!