1989 Nissan Pickup
As long as they are the same body style most every thing should be interchangeable now for the heater core you wouldn't want to guess and it be wrong. on the advance auto parts web site they have where you can look up a part for your particular model and there is a button to see what other models it will fit.
Yea. They are pretty well interchangable. You may want to resort to the manual first though.
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