This is a Transmission Rebuild Kit for a Ford Bronco II or Ranger with the 4 Speed TK4 Manual Transmission Part# BK143WS You can identify this transmission by its 14 bolt aluminum bottom pan. This kit includes all New Bearings, Seals, Gaskets, and High Quality Synchro Rings. This transmission was found in the following 4 Wheel Drive Bronco II and 4 Wheel Drive or Rear Wheel Drive Ranger applications: Bronco II 4 Cylinder 2.0L 1984 Bronco II 4 Cylinder 2.3L 1984 Bronco II 6 Cylinder 2.8L 1984 Ranger 4 Cylinder 2.0L 1983-84 Ranger 4 Cylinder 2.3L 1983-84 Ranger 6 Cylinder 2.8L 1983-84