Air gap intake and heater hoses

I'm wondering if the 1/4" i.d. is enough flow to still be 'hot' by the time the coolant gets to the heater core? If it is I'll just use the 3/8" hole.

it is a fair question, though. Why wouldn't Eddy do it right? I wonder if the Chinese knock-off air gaps have this issue???

I don't understand what Eddy "didn't do right". The 1/2"OD nipple has an ID just a C-Hair under 3/8" and fits just fine as pictured in the 1/4"NPT hole. No issue as far as I can tell.

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