Quick update, it looks like the correct PN/SKU for the BMW brand filter kit is:
11 42 5 A33 C42
After trying about 3 different online BMW order forms at various dealerships, and all 3 getting cancelled due to no stock I found one @ BMW of Southampton. No online ordering but I spoke to a really nice guy to place a phone order. He confirmed my VIN was correct for this part and knew about the filter housing change in recent builds.
I also ordered an individual stem seal o-ring to see if I could use that with the kits that were for the pre-December 2021 built X5 M50i. Until I get the correct kit above I won't know if the o-ring is correct.
The PN(s)/SKU(s) for that are: 11421744001 or 11427549573
Finally, Hengst does show a cross reference for that kit above but I ordered it and the o-ring is not correct. Mann and Mahle still don't show and option nor a cross reference.
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