There is an alternative to going to the dealer for a replacement rear blade on the 2008+ Scion Xb's. It may first appear that the blade and arm are one piece but if you take a look, you'll see the wiper blade can be replaced and its actually quite simple. There may be other alternatives, but the 'Trico Exact Fit Rear Blade' at wipers123 online snaps right onto the special rear arm and looks like the factory original. Much cheaper than the dealer alternative. Comes with removal and replacement instructions too. Hope this helps.