Product review (5 stars): Better than original.
This product is an improvement over the original part. It uses a ball bearing instead of a low friction coating.
You will have to remove and dispose of the entire assembly (shown on picture). You can't just remove the old wheel and pop this one on as replacement. Because of the bearing on this wheel, the shaft is a different diameter.
At the same time doing so it's really not a big deal (1 extra screw, which is also included in the shipment.
Works great :)