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Skip to contentHC 47-52 Fresh Air Dlx inline tubes 3R
This fits the 1947-1948 Chevy Trucks With Outside Air Heater and Defroster and 1950-1952 Chevy Trucks with the Airflow Style Heater and Defroster. This also appears in GMC trucks. We have seen this heater core as late as 1955. THE TUBES ARE INLINE.
The "Air Flow" DeLuxe heater used fresh air supplied from a duct that took in air from the outside. The lower priced heater was the "Recirculating" heater used the in-cabin air and had the round donut style core. Its most commonly found in southern "mild climate" cars.
We have replaced the cellular Harrison design with tube and fin core that can handle the higher system pressures of today's engines. devestechnet.com provides an excellent visual how-to on restoring the heater core in a 1950 Chevy Truck.
[Housing image is for illustration purposes only]
Our build queue varies.
Made in the USA.

We make to order. Please allow adequate time for us to build.
Build time estimates [April 23, 2026]
Model Ts Brass 18 weeks
Model Ts Black 13 weeks
Model As 17 weeks
Heater cores ~11 weeks
1928-34 Ford Hot rods 2-3 weeks
Common street rods ~12-15 weeks
Tricky customs & complicated restorations ~20-25 weeks
We appreciate your patience as we continue to recruit and train new fabricators and manage the labor shortfall our country has been experiencing.
We make to order. Please allow adequate time for us to build.
Estimated Build time [April 23, 2026]
Model Ts Brass 18 weeks
Model Ts Black 13 weeks
Model As 17 weeks
Heater cores ~11 weeks
1928-34 Ford Hot rods 2-3 weeks
Common street rods ~12-15 weeks
Tricky customs & complicated restorations ~20-25 weeks
We appreciate your patience as we continue to recruit and train new fabricators and manage the labor shortfall our country has been experiencing.