Arrives before Christmas 
Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.
Error submitting comment. Please try again momentarily.
13" Wide x 7-5/16" tall x 2" deep, super-efficient heat exchanger improves the performance and increases the lifespan of your vehicle's transmission. Includes -6 AN aluminum fittings and hose-barb adapters.
Features:
Specs:
Note: The Derale Insta-dapt radiator adapter fits most vehicles with 5/16" transmission lines, but not all. In some cases, additional fittings or alteration of the OEM lines or hoses may be required for installation.
Stacked-plate heat exchangers have long been considered the most effective type of oil or transmission cooler, primarily because of their increased surface area. Allowing fluid to spread out over this larger surface area decreases the time required for heat transfer to take place. As a result, plate coolers typically manage to cool a greater volume of fluid faster than tube-and-fin, or even plate-and-fin, varieties.
California residents: click here
Worked perfectly, under the grill facia it was almost invisible. Kept the AT fluid about 20 degrees F cooler. Easy to install (About 2 hours)
Cooler was well built and fit my 2002 Silverado with some slight modifications to the existing bracing. It seems to cool well but I haven’t towed anything heavy yet in warmer temps to know how well it cools above the stock cooler.
This transmission cooler is a true game changer. We are now able to climb steep grades without overheating the transmission. Installation was fairly straightforward, and it fit in the same location as the original cooler. We have traveled over 4500 miles since installation and are very happy with its performance.
Jj
3/2/2022
After one year this transmission cooler is working great. We have traveled over steep mountain grades with no problems.
Absolutely awesome!!!! Took 100 degrees out of the Trans! Pulling a trailer through the mountains. 100% recommended. It didn't fit quite perfect on my 2014 yukon and had to buy more hose but worth every penny spent! I will buy again
I just received the Derale D13403 transmission oil cooler and the Firestone Ride-Rite air suspension system for my truck. I have not installed them yet but my experience with the ordering process was excellent. I placed my order on a Saturday afternoon and received confirmation of shipment later the same day. Everything was packaged very well and free delivery was quick. I have ordered from etrailer before and will continue to use them as my needs arise..
ordering was easy. Paula was professional, knowledgeable and helpful. The product arrived on time and was in excellent condition ready to install. Installation wasn't complicated just a few hours from start to finish. We are ready to roll!
Do you have a question about this Transmission Cooler?
Info for this part was:
At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.
Stephen
3/15/2025
Derale transmission cooler is working well. It keeps the transmission around 15-20 degrees cooler in my 2002 2500HD Silverado with normal towing. When transmission temp does go up when pulling steep hills or driving through a town it cools back down pretty quickly afterwards. For normal driving it really keeps the transmission cooler. I have a 4180E transmission which runs around 175-180 degrees towing a 7500 lb 5th wheel camper in warm weather.