KM145 & KM146 5 Speed 4WD Transmission Rebuild kit found in Bronco IIs and Rangers BK151WS You can identify this transmission by its 12 bolt tin bottom pan (Bronco II) or 12 bolt steel bottom pan (Ranger) and it does NOT use a synchro ring in reverse. This transmission rebuild kit will work for the following 5 Speed, Four Wheel Drive Applications: Bronco II (Compact) 4 Cylinder 2.0L 1985-87 Bronco II (Compact) 6 Cylinder 2.8L 1985 Bronco II (Compact) 6 Cylinder 2.9L 1986-87 Ranger 4 Cylinder 2.0L 1985-87 Ranger 4 Cylinder 2.3L 1985-87 Ranger 6 Cylinder 2.8L 1985-87 Ranger 6 Cylinder 2.9L 1985-87 This kit comes with all new bearings, seals, gaskets and high quality synchro rings. Please Note: We have a very limited supply of Antonio Masiero Gears that fit this Transmission; we have the last of these gears available. Once there gone that's it you will only be able to replace your gears with Taiwan, India or Chinese manufactured gears. So if you are rebuilding your FM145 Transmission now is the time to purchase these high quality Italian made gears!