|This is a Major Hard Part kit that you have asked us for. This does not contain a chain or bearings as our survey of customers said these parts are the ones they most needed. The bearings can be purchased from us seperately as well as the drive chain should you need them. As for what is in this kit, it's a LOT! You recieve all new O.E. parts as follows, Range shift fork, Range shift hub, Oil Pump, shift selector cam, input drive gear, oil pick-up screen, and seal kit with adaptor gasket. These parts are the common failure items when your Explorer / Mountaineer is making that terrible "Rattling" sound when you let off the gas, or when it just plain doesn't go anymore and the t-case has been determined to be the problem. Questions? Call us TOLL FREE 1-877-614-GEAR, we want to help!