1930-1931 Ford AA Commercial Truck 10 FPI Radiator 1951 It’s unique shape follows the

It’s unique  shape follows the shell’s contour  to maximizes the fluid capacity and the flat black color helps it blend into the engine compartment

the air pressure opens the valve

"  If we do not have a pattern you may need to ship yours in

Baffle in top tank to prevent coolant loss in non pressure system

1930-1931 Ford AA Commercial Truck 10 FPI Radiator 1951 It’s unique shape follows theThis radiator is a drop in replacement for AA 8005 B for production from June 1930 until the end. It has a deeper shell and set up for the OE engine in its production year. It has been called the "high efficiency" radiator or "modern" core principally because it has 10 fins per vertical inch; a gain of 40% surface area and a highly elliptical tube shape. This tube design provides equal volumetric throughput but increases tube surface area by 293% thus