Product review (5 stars): Save your old wheels---Otherwise great product!
I've repaired/replaced my KitchenAid upper rack rollers I think three times before. The plastic tabs that secure the wheels keep breaking off on the old design. This replacement looks like it should last the life of the dishwasher. The only problem I had was that the rollers in the rack adjuster kit were larger than the original and would not fit my tracks. Fortunately the "axle" was the proper size for my old wheels so I just removed them and installed them on the new adjuster.