SPARES 4 BM’s. Monday to Friday 8am – 4pm. Saturday (by appointment only). Sunday & Bank Holidays Closed. (Calls & messages will not be answered outside of normal working hours). This listing is for. BMW F10 F11 F06 F12 F13 Top HiFi Harman Kardon Subwoofers. Part Number: 9 169 688 / 9 169 687. Item Condition: Item is in good used condition. These lists do not guarantee correct part fitment. All items are described for Right Hand Drive UK market vehicles.