Product review (5 stars): Worked perfectly and fixed my problem
Worked perfectly in my cabrio (wtw6400sw2), used the install tool that you buy separately.  Took me a little over 2 hours because my shaft was pretty badly rusted in place and it required a lot of hammering with the 2.5 sledge to get it out.  No more jet engine sound or leaks from the bottom.  Using the printed instruction that came with the tool it was very clear what order to put everything in.  One note: don't lay the stator inside the cover from it, is magnetic and sticks in there and pay close attention to where the sensor attaches, there are little indention on the side but took a few minutes to figure out which side was which.

Of course now my hoses are leaking slightly even after replacing the washers in the ends... so I guess I get to buy new ones of those...