Heater Core Replacement

by Michael Monson

Dec 9, 2025

I'm currently rounding up parts for a heater core replacement in my 1964 Deville.  I'm looking for replacement hoses that connect to the heater core itself.  It's a factory a/c car and has the metal cooling return tube  These two links give some help, but I was hoping for confirmation that these are correct or any other available options.  Thanks for the help

https://6364cadillac.ning.com/forum/topics/1963-390-upper-heater-co...

https://6364cadillac.ning.com/forum/topics/heater-hose-1

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  • up

    David Thomas

    On my 63 CDV I bought correct diameter heater hoses that have a 90 degree Bend molded into them. They are available in different lengths that can be trimmed to fit. They look good and don't kink. I buy coolant hoses from NAPA.

    Dec 20, 2025

    • up

      Michael Monson

      OK, finally back to this project, after dealing with a broken hand for 6 months.  I do have the cooling system version with the hard water pipe 8.866.  I'm trying to find hoses to replace 1479723 and 148129.  My car is not a concours quality, but a solid cruiser so I'm just looking for suggestions to make it work other than the correct part numbered ones for $110 each.  I do have gates  19622 which is the equivalent to autozone C88368 from this thread.  

      https://6364cadillac.ning.com/forum/topics/1963-390-upper-heater-co...

      Hose 1482129 looks to be a 5/8  with a 90 and a small kick,   Thanks for any suggestions  for when I go looking at the parts house.  Thanks

      1

      Feb 14

      • up

        Michael Monson

        Perfect, thanks for the help

        Feb 15