|This is our ultimate repair kit for the 4405 Borg - Warner case. This replaces all common wear parts inside the 4405. If you need a planet or mainshaft, we have them too, but this is the big guy of Master kits on the market today. You get, sprockets, chain, oil pump, screen, seals, bearings, adaptor gasket, input drive gear, range shift fork, range shift hub, and shift selector cam all in one kit for your convienence. We have them, they are all O.E. parts, and they are ready to ship, so you may get that Explorer or Mountaineer back on the road. Questions? Call us TOLL FREE 1-877-614-GEAR.