Powerflex Polyurethane Bush kit for BMW E39 5 Series (1996 - 2004) Rear Subframe Mounting Bush - PFR5-530BLK - This part replaces original BMW part number 33311094036. These are complete bushes, for inserts used in conjunction with the original bushes use PFR5-531 - 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!