Are Transmission Coolers Directional?

Are Transmission Coolers Directional? Are Transmission coolers directional? Can Transmission Fluid Flow Through Either Direction on a Transmission Cooler. Helpful Expert Reply: Either fitting of the Derale Series 8000 Plate-Fin Transmission Cooler Kit # D13504 can be used as the inlet or the outlet. The cooler can have fluid flow in either direction through it.