Product review (5 stars): Simple fix saved our washing machine!
Our 6 year old Whirlpool WFW9750 sounded like a jet plane about to take off every spin cycle.  The local repair guy said to just get a new washer, he would have to replace the entire drum assembly.  Almost did it, too, until I remembered that the bearings had been replaced once before about 6 months after we bought it, under warranty.  I researched a bit and found videos on how to replace the bearings, and bought this set.

It turned out to be fairly easy to do.  The videos on the sellers site were comprehensive and had some good tricks to make the process quicker.  It took me about 3 hours from unplugging the washer to starting a load of clothes, and that was with taking breaks to review the videos.  Im fairly handy, and probably have more tools than most non-mechanics, but I am convinced that anyone with basic hand tools and the skills to change a spark plug can handle this job.  The hardest part was moving the washer into the kitchen to take it apart.  The drum is a little heavy too, but I managed to lift it in and out without help.

The bearings are working great, I can barely hear the spin cycle now.  Shipping was really fast.  From other reviews and the general feeling of quality of the new parts, I expect that the rest of the washer will die before these bearings wear out.