Product review (5 stars): First this kit does fit the whirlpool cabrio wtw6400sw0 with ...
First this kit does fit the whirlpool cabrio wtw6400sw0 with no problems. Kit came fast on Sunday made repairs without the Bearing install tool save your money.  The top bearing came out with the shaft use the old shaft to knock out the bottom bearing. I used a 1 1/2 " socket to knock in the top bearing. I used a 11/4" socket to knock in the bottom bearing. I installed the new shaft and nut make sure put the two spacers in before the bottom brg. I greased the new seal added the adhesive to the outside and pushed it in with my thumbs. The only thing I would do different is to take the machine apart before you order the kit the shaft I took out was worn-out the bushing in the tub that the shaft goes in are worn it most of the slop out the tub but I don't expect this repair to last long and a new tub for me isn't worth it. Hope this helps.