This is the heater core, removed from a 1971 144. Let me tell you what I mean when I say it has been tested, what I do on cores is drain the water out, apply low air pressure then spray the core with soapy water and look for any bubbles, did that on this one and no bubbles. This does not mean it is perfect and you do buy as is. I do not know what yearsthis would be correct for, look at the angle on the inlet and outlet pipes, I understand that some years used straight pipes but I do not know when that was changed.

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