Genuine BMW M Performance Carbon Air Curtains Pair. Part numbers 51118077353 / 51118077354. To fit 4 Series G22 G23. It is your responsibility to make sure it fits your vehicle. The Channel Islands, Ireland (Northern & Eire), Scottish Highlands and Islands may be at extra cost. If goods are faulty, we will replace the item free of charge, if notified within seven days of the end of the sale. Electric items are not returnable if they have been used. We are a main BMW / MINI retail centre so can meet all enquiries. We also have large workshops if you need something fitted.