Which heater hose is the inlet?
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Junior Member
Joined: Oct 2007
Posts: 3
From: United States
I want to install a flushing T on my 99 LeSabre. I am not sure which heater hose is the inlet or the return. They both come out of the engine in the same area near the water pump. If you can help me please tell me if the inlet is the upper or lower hose thru the firewall. THANKS rd
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