wilbur Posted November 30, 2019 Share Posted November 30, 2019 It has a fitting in the front below the water pump. And one in the back on the water manifold. I would think the flow would come from the front and go through the heater core and return to manifold. Except the arrow on my heater control valve points the other direction. Its been like that since day one. There is no way to reverse it. Quote Link to comment Share on other sites More sharing options...
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