i need to find a part, its a metal tube just under the radiator, at one end of it a rubber hoses connects to it, then at the other end of it, it Y's off and 2 more rubber hose's connect to it, its for the coolant system i do know that much. thanks

 

which motor?
http://www.ecstuning.com/Audi-B5_A4-...Cooling/Hoses/

 

It honestly sounds like the intercooler piping that you are talking about. One side connecets to the bottom of the intercooler on the driver side. The other Y's to the turbo and the DV.

This is the only "metal" tube I can think of underneath the radiator.

 

That's why i asked which motor! I knew the 1.8 didnt have any metal lines but intercooler/ac wasn't sure bout the 2.8!

 

Yeah I don't think the 2.8 has any metal tubes either. I used to have one... But yeah knowing which motor would help a lot. I also don't think I have ever seen a replacement for the metal intercooler pipe anywhere.