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Founder, 1929-2014
Speedy Bill
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1955-1956 Chevy Car Heater Core

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1955-1956 Chevy Car Heater Core
1955-1956 Chevy Car Heater Core
1955-1956 Chevy Car Heater Core

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Q & A

What's in the Box

These are a 100% new, factory replacement Tri-Five heater core. Not a marginal recore like others sell. For '55-'56 Chevrolet cars without factory air conditioning. We also recommend the mounting plate, which is normally rusted beyond use.

Note: General Motors produced two different style heater cores for these vehicles. The heater cores we carry are a reproduction of the "deluxe" model, not the "standard."


Length of main core and tanks is 10", Inlet tube adds an additional 1/2" to overall length and so does one mount bracket.  Width is 7 1/4" and thickness is 2 1/2". Inlet and outlet are both on the same end and pointing in opposite directions parallel to the core.  One extends 2" past the core where the other makes a 90 degree turn ending mid way to the width.  Both inlet and outlet are for 5/8" hose.

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1955-1956 Chevy Car Heater Core Mounting Plate
(Part #91734456)

These heater core mounting plates are reproductions designed to work with 1955-1956 Chevy passenger cars.  We recommend replacing the mounting plate (which is normally rusted beyond use) whenever you replace your heater core.

  • Reproduction mount plate
  • 1955-1956 Chevy passenger cars
  • Replace with heater core