Been about 5 years since I’ve been on the site. No real reason, just kind of went on to other things. My ‘75 is still my daily driver and haven’t done anything more to it since, but drive it. Heater core, non a/c, started leaking few weeks ago and I can’t find one at any part stores, eBay, or any other sites I googled. What’s everyone else using? I realize I’m probably gonna have to get creative and rig something up. Thanks

I bet a radiator shop can get one .. they have connections

Good to see you back on the forum, I know you were a frequent poster a few years ago. Rockauto lists that heater core as in stock, Pro Source 91529, which they show as corresponding with the factory part #3489266.

I have my heater core at Performance Radiator now as they said they’ll charge me $50 for pressure test and $50 to fix a crack on one of the tubes going into it ( I could see a leak there). I called them and they said it had some other pin hole leaks also. That was a week and a half ago and haven’t heard from them since. Thanks for that part # Meanmachine! When I looked it up on Rockauto that # doesn’t show up. But I press your # in and now see it. I’ll order it and let you know what happens. Thanks again

Dang it, I waited to long. Just gonna order it and now there are none.

https://www.homedepot.com/p/Pro-Source-Heater-Core-91629/308756301

Home depot seem to have one!

Thanks KogonDodge but that number is showing up as for a Ford.

Oh yes, sorry for getting your hopes up, one digit got switched probably by google as a close match
Here is the manufacturers website

Pro source 91529

I've found these types are worth a call to ask where you can find a supplier.

Autozone carry pro source heater cores, no hit on 91529 on their website though. I bet there are other suppliers too

According the Pro Source website 91529 does not fit a '75. ???

Got my heater core back from the repair shop, $109. Not bad. Haven’t put it back in yet as I’m fixing some of the broken parts on the heater box. Then paint it and have it back together next weekend.