How Do I Install the Derale Series 7000 Tube-Fin Transmission Cooler Part D13102

Updated 09/08/2009 | Published 09/05/2009

Question:

If I install this do I take the top hose off? and leave the hot bottom on,then Install the top from the rad.to the bottom of the new trans cooler and the top to the old top line ? will I need more fluid?

asked by: Jim

Expert Reply:

Yes, the coolest line will be the return line that you need to attach to either port on the transmission cooler. The transmission cooler is not directional. You may need a small amount of transmission fluid to top off the system after the installation.

The transmission lines on your vehicle should have 3/8 inch fittings and one is provided with the High Performance Class III Transmission Cooler, item # HH41311. If you have a Chrysler, Jeep, Ford or GM vehicle you may need a vehicle specific fitting for installation (see link). This fitting will fit on the return side (out) transmission line of your radiator.

You will then attach the supplied hose to this fitting and run it to the transmission cooler. Then attach the remaining hose to the other side of transmission cooler and to the return transmission line. When attaching the hose to your transmissions return line you will not need a fitting. Just slide the original fitting back, put a hose clamp on then slide the hose over the original flared end and tighten the clamp. For those who have some mechanical ability the transmission cooler install will not be a problem and only requires a screw driver, adjustable wrench and a knife to cut the hose to length.

expert reply by: Robert G