My 02 X5 3.0 is having the all to common issue with its Transfer Case/Drive shaft slipping. Reading all the posts on this topic and a a brief discussion with a BMW mechanic, I've learned the front drive shaft design is flawed because it barely engages into the transfer case. The common result is stripping of the splines and the need to replace both shaft and transfer case. Big bucks! I hope to repair this only once. Does anyone know of an after market source for a longer drive shaft?

__________________
'98 540
'02 X5 3.0