LeSabre Buick's flagship mid-sized luxury sedan

Which heater hose is the inlet on 3.8L ?

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Old Jan 8, 2008 | 01:07 PM
  #1  
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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
 
Old Nov 28, 2023 | 05:36 PM
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fsj
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Upper
 
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