Originally Posted by
Frozen_Joker
It is aluminum. I would not suggest any temp fix in there. It is a very high chance of just stopping the heater core up completely. The passageways in the heater core are very small. I would suggest a full fix, which is a pain in the butt, but even a newbie mechanic can change it with patience and the right tools.
Any idea as to what amount to pay for this repair?