Looking those prices makes me feel better about paying $ 357 for my replacement alternator. I was a little pissed at paying that because on line I could find it for 100 cheaper or more, but I needed my X so I just grab the part locally. Of coarse mine isn't a 4.6 with s/c, that's gotta be alot of fun to drive. But you are right at least it is not a drive train problem.

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2010 X5M /// R63 AMG...Wifey's 540HP Family Hualer

2001 X5 3.0i Sport 335,448 miles & counting...
SMG M3 Steering wheel
E46 Stainless Racing Headers
4.6is Exhaust
Turner Pulleys
Afe Intake
Brembo drilled rotors
PowerFlex Bushings
Hualingan
30mm H&R Spacers rear
20mm H&R Spacers front
Bavarian Autosport High-Performance Coils
Active Autowerke's Performance Software