Harrison 1937-1938 H-78 Twinflow Heater Core
Harrison 1937-1938 H-78 Twinflow Heater Core

Harrison 1937-1938 H-78 Twinflow Heater Core

HC 37-38 H78 Twinflow

Regular price $329.00

Images of housing and support plate is for identification only.  You are buying a heater core and 12 fan pusher for the 1937-1938 Harrison two door twinflow housing.  The housing and support plate are separate items and not sold here.

If you are a purist, you will probably want your round Harrison heater core restored.  However many of you may just want your window clear of fog, your feet warm and your wife happy.  The 1937-1938 round heater cores are designed to fit the Harrison H-78 housing.  Our re-designed heater core uses a better core design and a 12V SPAL fan.  The thickness grows but we designed an interface that is not visible when installed inside the housing.

[Housing image is for illustration purposes only]

Our build queue varies.

Present Lead times.

Made in the USA


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

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Guesstimated build times (updated March 21st) 

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

Build time estimates

Brass Model Ts 6 months

Black Model Ts 4 months

Model As 2.5 months

Heater cores 6 weeks

Common street rods 2 months

Customs and restorations 4 months

We appreciate your patience as we continue to recruit and train new fabricators.

Please read the terms and condition regarding cancelled order fees.