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5.0L (1979-1995) MustangTechnical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.
While replacing my water neck I ran into an issue. The main radiator hose is fine, but there is an additional hpsemount on the left. In the water neck I took off it was sealed up. Does this connect to the air con? Mine is missing and I would like thoughts on how to plug/runa hose with a plug?
That little hose is the bypass hose. It goes from the water pump to the t-stat housing. Also it IS neccessary. If not you will have coolant everywhere. Thats the spot where the chrome Ford Racing goosenecks leak.