70mm Thick Race Radiator Upgrade your cooling system with our new 70mm double row aluminum radiator for all C7 Corvettes. This new Direct Fit radiator features serpentine fin and special dimpled cooling tubes. These dimples create turbulence as coolant passes through the tube. Turbulent flow is a proven method to increase heat transfer over the standard lamar flow method. The thicker core increases tube-to-fin surface area and the all aluminum construction eliminates plastic end tanks and gasket failures. The larger capacity end tanks hold one additional gallon of coolant to help dissipate heat. DEW-1149114M The above HP model require trimming of the plastic fan shroud to allow for the thicker radiator. Instructions included. Click HERE for instructions.