1937 Chevy Truck Radiator ford U nuts slide onto the

U nuts slide onto the raised section of the bracket

The lower priced heater was the "Recirculating" heater used the in-cabin air and had the round donut style core

one-off or hard to find copper and brass heater core for your older vehicle you are not alone and you may be in luck

The "Air Flow" DeLuxe heater used fresh air supplied from a duct that took in air from the outside

After you spend 10 hours of your life removing the aluminum glue and plastic heater core that failed you

1937 Chevy Truck Radiator ford U nuts slide onto the1937 Chevy 1 2T, 3 4T, 1T and S 1 1 2T trucks with the 2" Harrison V Cell film core had a water passage of 1 5 8" with 1 4" lead dip on the face and rear and we replace this with a 1 13 16 10FPI tube and fin core. The 1 1 2T HD with the 3" Harrison V Cell film core had a water passage of 2 1 2" with 1 4" lead dip on the face and rear and we replace this with a 2 5 8" 10FPI tube and fin core. Tube and fin core conversions are regarded as more modern