Hey all what is the valve called that connects the hoses from the water pump housing and the tstat housing to the core inlet and outlet called? It has a vacuum on it and when the heat is turned on it opens the valve to allow coolant into the core. I replaced it on my wifes old car and I can't remember what it is called. Mine is leaking a bit and I was wondering if I could replace it without removing my coolant? It looks like I can if I hold the hoses up but I'm not sure. Thanks all!
1997 Ranger XLT 4x4 4.0 Auto
What the Deuce!