As a DIYer myself i admire your work. Just a question, when you tipped the transmision down you did not have to remove the bolts which hold the transmission to the engine?

Pisendar: my X5 oil leak like yours, do you mind to share us how much dealer charged to replace these gaskets? Did they change your X transmission fluid when replacing them?
Thanks!

Sorry with the late answer.
Dealer was going to charge me around $950. But since the car was under the warranty, they had to call them and negotiate the price. Warranty dropped down dealer labor price and the Final cost was $549.90. +$50( deductible)
Thanks

Thanks Pisendar, totally ~$600 is not bad. My X problem is similar to your but oil leak is not coming from transmission fluid but transfercase. I ordered output shaft seal and shaft seal for transfercase. I will replace seals on this coming up thursday.

Deep socket 36mm (1 7/16") needed, and I don't have that.
( to open the T case you don't removed this nut)

Did you get a chance to fix your problem ?

Pisendar, yes I did. Ordered 1 output shaft seal (P/N 24117557066), 1 transfer case shaft seal (P/N 27107539262), 1 transmission drive extension gasket (P/N 24137557074). I also did transmission fluid, replaced trans fluid filter and transmission pan gasket.

It took me 6 hours to completed everything. No more leak.

Thanks for quick respond,,, do You have 3.0 engine ?

Yes i have 2004 and 3.0 engine. What year and model you have? Are you going to fix it yourself? Let me know if you have any question regarding this repair. I did it myseft with my friend's lift.

Here is my X5 x-drive tranfercase & transmission detail from REALOEM:

I have a NV125 T-CASE Fully rebuilt LOS ANGELES AREA 1200.00 /562 3917011

X5 BMW 1999-2002 SOME 2003