Powerflex Polyurethane Bush kit for Fiat 500 (2007-) Rear Shock Absorber Top Mounting Bush - PFR16-515 - Replaces the top bush on the standard OE shock absorber including the Abarth models. Shock absorber OE part numbers 51857840, 51857841, 51857842, 51857843, 51860150, 51864833, 51957098, 5744631. - 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!