Product review (5 stars): Great replacement.  easy fix.
I hired a repairman from Best Buy to come out and fix my out of warranty washer.  It was making a grinding noise and wouldn't rotate.  He showed up, opened up the back, tightened a bolt, then charged me $150. The machine worked for day then the same symptoms occurred.  I should have Googled it the first time. But after doing so I heard that this part may fail after several years. I opened the back of the unit and noticed little shavings from the back of the rotor. After closer inspection I found the teeth of this rotor disc wore out and it was smooth.

So I bought this piece and it solved the problem beautifully.  Before this happened I had know idea about the operation of the one drive washing. So I guess I got a $150 lesson. Thank goodness I found this out I may have paid twice the price through Best Buy.