04 Passat V6 cooling system leak

Hello everyone, I have a 2004 Passat that has a MAJOR Cooling leak. I have located the leak but am unable to locate the name of the part. I have attached a picture of the diagram and the part in question is #56. Can somebody PLEASE tell me the name of this part. Thanks for any info. :banghead:

#56 is merely a support bracket for some hose junction fittings and the #35 "after run coolant pump", aka, auxilliary water pump. Pressure testing the cooling system will most likely pinpoint the leak. Check all fittings and hoses. The pump ain't cheap. HTH