A part number please

[Rbade12 at aol.com]

I've developed a leak in the coolant return line that runs from the bottom  
of the turbo to the engine block. Could someone please give me that part number 
 and/or can that line be replaced with something else. The leak is in the 
metal  portion where the rubber hose begins.
Any repair options?
 
Thanks! This damn cold weather[-4 this am]is causing issues with half our  
fleet, and the German half at that [VW and Audi].
 
Have a Happy Holiday all.
 
Bob