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 E81 E82 E87 E88 E90 E91 E92 E93 Logic 7 Sub Subwoofer Speakers. OEM Part Number: 9 143 135. Item is in good working condition. These lists do not guarantee correct part fitment. All items are described for Right Hand Drive UK market vehicles.