GMC 1968-1972 K25/K2500 Heater Core

Who makes a copper heater core for the GMCs?   We do.  If you are searching for an obsolete, one-off or hard to find copper and brass copper heater core you are not alone and you may be in luck. We make our own cores and fabricate our own tanks so, naturally, we get asked to build custom heater cores or "small radiators."

Our build queue varies but please allow at least 3-4 weeks.

Made in the USA

If you need another heater core core for a different year or model ...You may mail your contact information, the heater core and assembly to: