Here is the thread. Although I had new lines installed last year I had to cut the return line to insert the cooler.
http://www.xoutpost.com/bmw-sav-foru...-cooler-2.html

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4.8is 2004 imola red
4.8is 2005 Black on Black - DINAN/2 sold
4.4 2004 X5
2003 330xi
2008 328xi - sold
4.4 2000 X5 - sold