Mazda 1990-1997 Miata Heater Core
Mazda 1990-1997 Miata Heater Core
Mazda 1990-1997 Miata Heater Core
Mazda 1990-1997 Miata Heater Core
Mazda 1990-1997 Miata Heater Core
Mazda 1990-1997 Miata Heater Core

Mazda 1990-1997 Miata Heater Core

HC 90-97 Miata stock hoses

$329.00

If you are searching for a copper and brass heater core to replace the leaking aluminum one you just replaced in your Mazda Miata then you are not alone and you are 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." 

A customer mentioned that he preferred two short hoses connections for easier installation rather than the one short and one long.  Indicate this preference when ordering this heater core. 

Our build queue varies.

Present Lead times. 

Made in the USA


We make to order. Please allow adequate time for us to build.

Build time estimates [Feb 2025]

Brass/Black Model Ts

Our longstanding foundry (supplier) closed and all production was shifted to a neighboring foundry.  Apparently many of the closed foundry's workers were ineligible for rehire by the new foundry due to more aggressive immigration enforcement and the union has no employees to provide.  As of 2-20-25, we should receive castings in March 2025 and can resume production then. 

In the interim, we have been working with our one-off foundry to have pattern boxes made and these are trickling in in smaller batches and we will produce what we can.

Model As 5-6 weeks

Heater cores ~6 weeks

Model A and 32 Ford Street rods 6 weeks

Common street rods ~12-15 weeks

Tricky customs & complicated restorations ~16 weeks months

We appreciate your patience as we continue to recruit and train new fabricators and manage the labor shortfall our country has been experiencing.