Powerflex Polyurethane Bush kit for BMW E70 X5 (2006-2013) Front Radius Arm To Chassis Bush - PFF5-1401BLK - 5-1401BLK addresses commonly reported failures of this front bush. Made in two halves, this bush is very easy to fit and features 7 tapered voidings to allow the radius arm to follow its natural arc. This bush replaces OE part number 31106778015. - 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!