Originally Posted by mgruber

While the 422A seems to work, like I said before, I called Bosch tech support and was specifically told 422B was the correct one to use.

That being said all new BMW's seem to come with "SWF" branded wipers which are a co-brand of Valeo's not Bosch. Frankly the Valeo Ultimates look identical to the Bosch Icons to my eye. Given Tirerack's great deal on them right now, and the fact that there seems to be no ambiguity in fitment for an E53 X5, I'm going to pass on the Bosch and likely just get the Valeo's.