Yes sir. Here you go!
Google search for e39 hard downshif heat exchanger returns:
Automatic Transmission Heat Exchanger Cleaning/Regulator Replacement (540iT) - Bimmerforums - The Ultimate BMW Forum

For civdiv external oil cooler google returns:
http://www.xoutpost.com/bmw-sav-foru...on-cooler.html

And if you want to control the engine temperature as civdiv here is the link:
http://www.xoutpost.com/bmw-sav-foru...long-post.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