whats the name.....

ok i'm doing a pi head swap

and my only question is what is the name of the coolant line under the intake, that runs from the heater core to the waterpump?? i went to 2 autoparts stores and they didn't know what i was talking about and said i should go to a dealer. and when they thought they had the right one they sent me the heatercore hose....not the one that goes under the intake
 
I've heard it referred to as the valley coolant tube. Not saying that is textbook nomenclature, but rather a common reference.

If you find a part number, post it up, so that someone searching for this can benefit as well.