 It's obvious now that Ford has a real problem with the wheel bearings on the Explorer.  Today, I am having the 4th wheel bearing replacement on my Explorer.  Right rear (once) Left rear (twice) and today, Left front (once).  It seems inevitable that the next to go is the Right front.  What a complete pain and drain on the wallet with each replacement costing $400.  Other issues include body hardware and a way underpowered engine.  