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Old 02-17-2013, 05:08 PM
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QSilver7 QSilver7 is offline
Officially Welcomed to the 'Fest
Location: Northeast Indiana
Join Date: Aug 2008
Posts: 7,111
Mein Auto: 1997 740iL / 2006 X5 4.4
If I was in your shoes...I'd look up the comfort seat (or the parts for the comfort seat) from the 2006 4.8is (including the rails) on one of the part database sites like ... then use the vehicle part nbr search feaature to see if the earlier models are listed as using the same part.

For example...I looked up the comfort seat control actuator (#1 in the diagram below)...

...then copied and pasted it's 11 digit BMW part nbr (61317119869) into the part nbr cross reference search feature on the site at the following link and got this list of BMW vehicles that use the same part...if you click on the E53 details'll get the list of e53 models that use that part:
Q {BMW CCA Member #191509}
2006 E53 X5 4.4i (Sterling Gray) 12/05 mfg date <<~>> 97 740iL (Arctic Silver) 3/97 mfg date
99 540iT (Orient Blue) <<~>> 95 525IT (Alpine White)
91 735iL (Schwarz Black) <<~>> 85 325e (Bronzit)
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