2001 Dodge Durango

We have a 2001 Dodge Durango and it is leaking coolant from a hose by the firewall. The hose is hooked to something that looks like an upside down wishbone and the bottom has 2 hoses and the top has 1. Its the one on the top leaking. We pulled off but there was some kind of plastic inside the hose and it broke and crumbled in the top where the hose attaches. The people at autozone have no idea what it is and we can not drive the truck there. Any suggestions. We just need to know what the wishbone with the 3 hoses is called on the firewall on the passenger side?
September 5, 2012.

Heater hoses. I suggest riding to the dealer parts department and have them show you a picture of the hose.