This Dana Model 18 Transfer Case Rebuild Kit Fits: Various Jeep CJ Series Dana 18 Transfer cases from 1950-61 Part# BK18A This transfer case has an iron case, is gear driven and uses a 28.6mm outside diameter idler shaft. This kit comes with the main bearings, seals, gaskets, small parts kit and idler shaft. All the parts that are included are displayed in the picture. This is an actual picture of the item for sale. This is NOT a generic picture.