Product review (5 stars): Used this to fix a Whirlpool Cabrio WTW7340XW2. The ...
Used this to fix a Whirlpool Cabrio WTW7340XW2.  The symptoms were: grease splatter under the washing machine, and a very loud spin cycle.

There are plenty of videos showing how to install if you search.  Watch em all.  The new bearings do need to be seated/pressed in, so get the install tool, or have a plan for that.  Some people use the old bearings and a hammer to tap in the new ones (being careful not to hammer on the inner race)

The one problem I had was that the inner basket was was stuck to the shaft due to corrosion.  I ended up hammering the shaft out of the outer tub from the bottom with the basket still attached.  It then took about an hour trying to find a way to hammer the shaft out of the inner basket.  A short handled hammer would have come in handy.  I ended up using an extension bar to hold on the shaft and hammer on.