What hose is this leaking antifreeze?

chevrolet
aveo

#1

It attaches to the same mount that the radiator hose connects to.
Thanks


#2

If it goes through the firewall it goes into or comes out of the heater core.


#3

That looks a bit small diameter to be a heater hose.

Yosemite


#4

It’s called a heater hose pipe.

https://www.rockauto.com/en/catalog/chevrolet,2005,aveo,1.6l+l4,1432645,heat+&+air+conditioning,heater+hose+/+pipe,6892

Tester