1. Transmission Coolers
  2. Derale
  3. Remote Cooler
  4. Class II
  5. With 11/32 Inch Hose Barb Inlets
  6. 13-5/8W x 7-5/8T x 3-1/4D Inch
Derale Dyno-Cool Remote Cooler with Fan and Hose Barb Inlets - Class II

Derale Dyno-Cool Remote Cooler with Fan and Hose Barb Inlets - Class II

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Derale Dyno-Cool Remote Cooler with Fan and Hose Barb Inlets - Class II 13-5/8W x 7-5/8T x 3-1/4D Inch D12740
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13-5/8" Wide x 7-5/8" tall x 3-1/4" deep, cooler assembly keeps your vehicle functioning at its best no matter where it is mounted. Electric fan supplies airflow to the tube-fin core. For transmissions, power steering or fuel systems. Lowest Prices for the best transmission coolers from Derale. Derale Dyno-Cool Remote Cooler with Fan and Hose Barb Inlets - Class II part number D12740 can be ordered online at etrailer.com or call 800-298-8924 for expert service.
  • All Info
  • Reviews (92)
  • Q & A (2)
  • Photos
  • Why etrailer?

Derale Transmission Coolers

  • Remote Cooler
  • Class II
  • With 11/32 Inch Hose Barb Inlets
  • Derale
  • 13-5/8W x 7-5/8T x 3-1/4D Inch
  • Remote Mount

13-5/8" Wide x 7-5/8" tall x 3-1/4" deep, cooler assembly keeps your vehicle functioning at its best no matter where it is mounted. Electric fan supplies airflow to the tube-fin core. For transmissions, power steering or fuel systems.


Features:

  • Improves longevity and overall functioning of transmission, power steering or fuel system
  • Cuts down on heat-related failures
  • Offers continuous airflow via the electric fan
  • Cools efficiently with tube-fin core
    • Copper and aluminum construction ensures adequate heat transfer


Specs:

  • Inlets: 11/32" hose barb
  • Overall dimensions: 13-5/8" wide x 7-5/8" tall x 3-1/4" deep
  • Mounting dimensions: 10-1/4" wide x 5-1/8" tall
  • Distance between inlets: 6-1/4"
  • 1-Year warranty


Perhaps the simplest type of heat exchanger, the tube-fin effectively cools a variety of automotive systems. The concept is simple: Fluid cools as it travels through the core by transferring heat out to the fins. The fins then provide the surface area necessary for sufficient heat exchange to take place, allowing the heat pulled from the fluid to dissipate into the surrounding air. Quick, easy and effective.

Take it a step further with a fan-mounted unit and you can be sure that there will always be optimum airflow for your tube-fin cooler no matter where it is mounted or what sort of environment you are traveling through, making it perfect for those hot days spent sitting in traffic.

Dimensions

12740 Derale Dyno-Cool Remote Cooler Assembly, 11/32" Hose Barb Inlets

Item # D12740

Installation Details D12740 Installation instructions




Customer Reviews

Derale Dyno-Cool Remote Cooler with Fan and Hose Barb Inlets - Class II - D12740

Average Customer Rating:  4.6 out of 5 stars   (92 Customer Reviews)

13-5/8" Wide x 7-5/8" tall x 3-1/4" deep, cooler assembly keeps your vehicle functioning at its best no matter where it is mounted. Electric fan supplies airflow to the tube-fin core. For transmissions, power steering or fuel systems.

- D12906
by:

Review from a similar Dyno-Cool in Transmission Coolers


Works great thanks mine got a hole in it and i replaced it with this one. 130315


Comments
Best thing iv ever invested in an at a great price
Ron - 05/13/2015

11649

- D12906
by:

Review from a similar Dyno-Cool in Transmission Coolers


This product is great and installation was not bad at all. Only issue I had was that the GM radiator adaptor should come with this unit when you purchase it for a GM truck. Not as an add-on. Thought I could get it at GM but no go. I Had to work with hoses over 30 min to get them over the fittings even with trans. fluid on the hose and male fitting. So far it looks like trans temp has dropped 30 dg. 134485



- D12906
by:

Review from a similar Dyno-Cool in Transmission Coolers


Ive got a 1999 4runner that had the unfortunate luck of having the integrated transmission cooler line rupture inside my radiator. needless to say, the transmission didnt agree very well with having engine coolant running through it and finally died out on me. I bought this transmission cooler to isolate the transmission and the engine cooling systems. The cooler arrived a day ahead of schedule, which is always a bonus. I didnt rate it at 5 stars because I havent had a chance to install it yet and see how it performs, but judging by the reviews that I have read so far, the customer service provided and the prompt delivery, I would say that this transmission cooler will keep my truck running for a good long while. Everything pictured arrived in the box and I have no doubt that it will perform as expected. I will definitely recommend this product and this company to my friends! 30988



- D12904
by:

Review from a similar Dyno-Cool in Transmission Coolers


Super easy install. With the installation video on Youtube it took out any of the guess work. The hose could stand to be about 3" - 5" longer if you are going to center in the A frame of an older chevy grill (I have an 06 Avalanche. I had to offset to the passenger side to use the supplied hoses) But, you can get a longer hose easy enough. Just ran over the pass and back and no leaks. Looks good so far! 377410



- D12906
by:

Review from a similar Dyno-Cool in Transmission Coolers


I ordered this cooler for my daughter's 2012 Nissan Rogue to fix CVT transmission heating up causing it to into limp mode. When I got ready to install, I found there was no place to connect the hoses to the transmission. The vehicle only had the direct "bee hive" cooler. Install was delayed while waiting to get a "4 tube bee hive" from a different supplier for an additional $114. 551625



- D12901
by:

Review from a similar Dyno-Cool in Transmission Coolers


Two cars, two transmissions radiators, very good product from etrailer.com Thank you ! 128472



- D12904
by:

Review from a similar Dyno-Cool in Transmission Coolers


works well, wouldn't buy one any smaller than this one. 529302


Comments
No issues, good product, thanks etrailer.
Doug - 07/02/2019

57374

- D12903
by:

Review from a similar Dyno-Cool in Transmission Coolers


Just got it in the mail the other day. Fast shipping, never have had an issue. Having it installed right now. Feels like it is well constructed and should do the job. We shall see what happens. 18179


Comments
What is the rated towing weight for a 1999 Honda CR-V? Does a trannie cooler install fairly easily on the Honda CR-Vs? What is the most effective mounting location for the finned cooler? How does the addition of a trannie cooler effect the volume of fluid and fluid level reading on the dip stick? Thanks for your time and expertise.
-- comment by: Robb B - 10/22/2013

2225

The towing capacity question is a loaded one. For that, I would refer back to the owners manual. It can vary depending on engine, transmission, drive configuration and more. Furthermore, Honda has some very specific guidelines regarding towing so it's best to defer to them. Installing a trans cooler on a full size truck can be easier because of the extra space, but it is not particularly difficult on any vehicle. We actually have a video of a cooler being installed on a 2006 C-V. We remove the front bumper cover for the video, but you may find you do not need to. (See link). The most effective location will be in front of both the radiator and the A/C condenser. As you move behind each cooling device, the efficiency diminishes. We put ours in front of everything on the 2006 in the video. For fluid capacity, plan on an extra 1/2 quart. Depending on cooler size and construction, it will vary some, but 1/2 qt. is a good rule of thumb.

-- Patrick B - 10/23/2013


- D12906
by:

Review from a similar Dyno-Cool in Transmission Coolers


Very easy install, absolutely no leaks anywhere in the system after putting it into service. I did have to get additional hose for the install due to the location I chose for the cooler (personal preference). I centered it on the bumper side of the radiator to provide the best air flow. Remember to get a quart of transmission fluid to accomodate the larger system volume after the install. I took my grill off to provide the most room for putting the cooler in rather than trying to wedge it between the radiator and grill, made install the nylon fasteners through the radiator and cooler much easier. Should last for many years. 61081



- D16908
by:

Review from a similar Dyno-Cool in Transmission Coolers


Great staff great products grade A service from customer service will definitely order from etrailer again 26560


Comments
Hi I need to know at what temp. is exactly activated Thanks
-- comment by: LIVIU - 08/09/2013

1868

This fan does not include a thermostat system. It can be wired into the original electrical system and will then operate according to the thermostat system in the vehicle. It can also be wired to an on/off switch but that is usually only done if off-road and race applications. We have plenty of thermostat options, sold separately, for determining the temperature at which the fan kicks on. For example, part D16735 kicks on at 180 degrees and shuts off at 165 degrees. Part D16759 is an adjustable thermostat system. Turn-on temperate can be set any where between 150 and 240 degrees. The turn-off temperature will always be 10 degrees less than the turn-on temperature.

-- Patrick B - 8/9/2013


- D12906
by:

Review from a similar Dyno-Cool in Transmission Coolers


After one of use on a 2005 Honda Pilot, everything is holding up just fine. The one star less is because of the difficulty in installing it on this particular vehicle. Although this is a universal component, it is MUCH easier to install on pickup trucks. Best of luck with a brand new rubber hose going on with any sort of ease. 521316


Comments
Our installers typically use some transmission fluid to make installing the rubber hose on the Insta-dapt fitting easier.
-- Rachael H - 06/13/2018

39688

- D12906
by:

Review from a similar Dyno-Cool in Transmission Coolers


I purchased this for my C6 Corvette A6 transmission. I did, however, bypass the radiator and only use the transmission cooler for the C6. I purchased and used the Derale Radiator Adapter fitting 259-13035 for both the top and bottom and just capped them off to keep debris out of the reservoir. I also had to make some custom mounting brackets. This is an excellent product and it keeps the tranny in a great temperature range. 552474



- D12906
by:

Review from a similar Dyno-Cool in Transmission Coolers


A simply outstanding experience. Great prices and customer service. Outstanding support with the web site videos. A true pleasure to deal with these folks. 808359



- D12902
by:

Review from a similar Dyno-Cool in Transmission Coolers


Worked great, was able to travel safely putting my minivan to work. Simple install with great instructions. Will extend the life and increase the value of your vehicle! 800997



- D12903
by:

Review from a similar Dyno-Cool in Transmission Coolers


works great for a simple upgrade. 794154



- D12906
by:

Review from a similar Dyno-Cool in Transmission Coolers


We installed a tow package on our Ford Flex. The transmission cooler was challenging, but everything else went smoothly. The product works perfectly. 776534



- D12906
by:

Review from a similar Dyno-Cool in Transmission Coolers


The part itself was easy to install and it does what it is designed to do. Only trouble with installation was with the vehicle, I had to remove part of the front cover on my 09' Avalanche to get to it. Also, I wish I had bought a black one to blend in with the rest of the radiator. 705491



- D12903
by:

Review from a similar Dyno-Cool in Transmission Coolers


Lacked one connector for my application. 671824



- D12903
by:

Review from a similar Dyno-Cool in Transmission Coolers


It appears that my transmission temp dropped about 40-60° adding this cooler. The hose was pretty hard to attach to the cooler, even with lubrication. The hose was also to small for my vehicle so I had to source other parts to make it work. I installed it on a 2017 explorer. 661750



- D12733
by:

Review from a similar Dyno-Cool in Transmission Coolers


Installed this in a 2017 Honda Ridgeline. Mounted it above the factory cooler that was already in the truck. (Flat fin side towards the a/c condenser). I used the insta-mount zip tie kit and also the flex metal mounts to anchor the cooler to the top of the factory cooler bracket as close to the a/c condenser as possible. The vertical bracket (part of the truck) that runs right down the middle of the a/c condenser has to be cut. All fairly minor fabrication. Hack saw and hand drill stuff. The fan has to be reversed to become a pusher. Followed the hood release cable from the interior to run 12 volts to power the fan on at ignition. Haven’t hooked the trailer up yet so I don’t know if this will resolve the hot tranny situation. ( I could smell the tranny getting hot before especially when we stopped at lights). Change your fluid too. etrailer delivered quickly and the cooler was well boxed and untouched. 656607


Comments
We towed our travel trailer 7500 miles last fall almost coast to coast and back. The trailer weighs 4400 lbs loaded. The Ridgeline’s towing capacity is 5k lbs. I kept our speed at around 65 mph. The truck was capable even in mountain terrain. The transmission never overheated. I did change the fluid once during the trip and again when we got back. The cooler worked. Never once did I get that burning smell. I’m almost certain that the cooler saved us a huge overhaul repair. Thanks etrailer.
James - 06/12/2020

80577

- D12213
by:

Review from a similar Dyno-Cool in Transmission Coolers


Fast shipping and the best customer service. Looking forward to getting the coolers attached and will add some pictures. 628785



- D12904
by:

Review from a similar Dyno-Cool in Transmission Coolers


Fast Shipping Customer Service is Great. They sent me a list of everything I needed. 615223



- D12906
by:

Review from a similar Dyno-Cool in Transmission Coolers


good show cost effective wood by again 599189



- D12903
by:

Review from a similar Dyno-Cool in Transmission Coolers


I just installed this on my chevy avalanche. Flipped the bottom brace around in order to mount to. The hardest part is getting the hoses on the cooler and over the return line. I ended up getting a 90 deg quick connection coming from the radiator instead of using the one I got from etrailer. This keeps the hose from bending as much. Also purchase the installation kit with a hose as you will need an extra hose. After install I wish I would have went with the next bigger unit which is 10 high instead of 7 1/2 as I had plenty of room. 591245



- D12906
by:

Review from a similar Dyno-Cool in Transmission Coolers


Great for the money free shipping anytime you are pulling a heavy load you should always have this 584833


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Show More Reviews

Ask the Experts about this Derale Transmission Coolers

  • Remote Mount Transmission Cooler Recommendation for a 2005 Chevy Silverado
    For a remote mount transmission cooler that comes with all the lines and fittings you would want the # D15960. Then for the correct transmission fitting you would want the part # D13035. The # D12740 is a great cooler, but it would also require the # D13064 to install. And the # D15960 is a more efficient style cooler so it would actually cool better. It is a stacked plate cooler that is the most efficient style available.
    view full answer...
  • Recommended Remote Transmission Cooler for 1999 Saturn SC2
    A transmission cooler will absolutely help you with the amount of driving you do to help prolong your transmission. The stop and start traffic won't help cool down your system, so I recommend you use the Derale Dyno-Cool Remote Cooler with Fan and Hose Barb Inlets - Class II # D12740 so you will have a fan to keep air moving even if you are at a stop. I recommend using the Derale Dual Hose Transmission Cooler Installation Kit # D13064. I've attached the installation details to assist.
    view full answer...




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Info for this part was:

Updated by:
DeAnne T
Updated by:
Daron K
Expert Research:
Jameson C

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