Powerflex Polyurethane Bush kit for BMW E39 5 Series (1996 - 2004) Front Inner Track Control Arm Bush - PFF5-511BLK - PFF5-511 is fitted on all petrol and diesel models except 535 to 540 and M5 which use PFF5-502. - 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!