Heater Exchange Valve 2005 Exp.

[TexEx]

Will I need to drain out my radiator & majority of the coolant in order to put on new heater valve? Also has anyone had issues with these leaking & pooling over the left bank or 3rd injector?

 

[mwl001]

Did you try here?
https://www.expeditionforum.com/forums/2nd-gen-2003-2006.41/

 

[TexEx]

thx, didn't even notice