Buick Forum - Buick Enthusiasts Forums - Which heater hose is the inlet on 3.8L ?

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- - Which heater hose is the inlet on 3.8L ? (https://www.buickforum.com/forum/lesabre-24/heater-hose-inlet-n-3-8l-1312/)

rdanth

01-08-2008 01:07 PM

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

fsj	11-28-2023 05:36 PM

Upper

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