Product review (4 stars): This is the Kit you want....
FSP Accessories by Whirlpool Corporation is the genuine replacements. Stay away from the others. Make sure to check the two shafts that the wheels go on for if they are bad then the wheel sleeve bearings will go bad prematurely. The wheel shaft replacements are w10359269 (right side), w10359270 (left side) and they are rather expensive for what they acually are. This kit comes in a blister package with nice instructions. Get it at this price for I just received mine and I paid $1 more!

Good experience overall...Thanks Amazon!