E46Fanatics - View Single Post - Heater core coolant leaking externally?
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Old 02-14-2020, 03:59 AM   #17
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Join Date: Aug 2005
Location: NJ Shore
Posts: 857
My Ride: E30M3 F10 RT
To answer your question.
The heater core does not have a drain.
Rather it uses the A/C drains,as it shares the same HVAC plenum.

Double check your work.
Don Fields
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