Quote:

You can buy a heater core at rockauto.com


You can but it is not anywhere near the quality of the OEM part. It lacks much of the support of the original. I could see it failing from metal fatigue.
I had mine boiled out and pressure checked by a radiator shop. Since it passed the check, I sent the replacement back for a refund.
Craig


2014 Ram 1500 Laramie, 73 Cuda
Previous mopars: 62 Valiant, 65 Fury III, 68 Fury III, 72 Satellite, 74 Satellite, 89 Acclaim, 98 Caravan, 2003 Durango
Only previous Non-Mopar: Schwinn Tornado