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  1. Transmission Coolers
  2. Derale
  3. Tube-Fin Cooler
  4. Small SUV
  5. With 11/32 Inch Hose Barb Inlets
  6. Standard Mount
Derale Dyno-Cool Tube-Fin Transmission Cooler Kit - Class II - Economy

Derale Dyno-Cool Tube-Fin Transmission Cooler Kit - Class II - Economy

Retail:$51.47
Our Price: $43.60
You Save: 15%
Transmission Coolers

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13" Wide x 7-1/2" tall x 3/4" deep, reliable, all-aluminum tube-and-fin cooler extends the life and improves overall functioning of your vehicle's transmission. Great Prices for the best transmission coolers from Derale. Derale Dyno-Cool Tube-Fin Transmission Cooler Kit - Class II - Economy part number D12906 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (127)
  • Q & A (0)
  • Photos

Derale Transmission Coolers

  • Tube-Fin Cooler
  • Small SUV
  • With 11/32 Inch Hose Barb Inlets
  • Standard Mount
  • 13W x 7-1/2T x 3/4D Inch
  • Derale

13" Wide x 7-1/2" tall x 3/4" deep, reliable, all-aluminum tube-and-fin cooler extends the life and improves overall functioning of your vehicle's transmission.


Features:

  • Improves functioning and overall performance of transmission
  • Extends life of transmission and prolongs period between necessary fluid changes
  • Cuts down on heat-related failures
  • Agitates fluid with built-in, embossed turbulators for more efficient cooling
  • Constructed of durable, lightweight aluminum
    • Thermal-conductive metal provides excellent transfer of heat
  • Includes:
    • High-temperature, OEM spec hose with stainless steel clamps
    • Nylon mounting rods
    • Insta-dapt radiator adapter
  • Recommended for small to mid-size trucks and SUVs
  • Imported


Specs:

  • Inlets: 11/32" hose barb
  • Overall dimensions: 13" wide x 7-1/2" tall x 3/4" deep
  • Core width: 10-1/8"
  • Distance between inlets: 6-1/4"
  • 1-Year warranty


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.


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.

Dimensions

Replaces 41011



12906 Derale Dyno-Cool Aluminum Tube and Fin Cooler with Installation Kit

Item # D12906

Installation Details D12906 Installation instructions

This Product Fits The Following Vehicles




Customer Satisfaction Score:


Customer Reviews

Derale Dyno-Cool Tube-Fin Transmission Cooler Kit - Class II - Economy - D12906

Average Customer Rating:  4.6 out of 5 stars   (127 Customer Reviews)

13" Wide x 7-1/2" tall x 3/4" deep, reliable, all-aluminum tube-and-fin cooler extends the life and improves overall functioning of your vehicle's transmission.

by:
Honda

Wanted to give my Honda better ability to handle a tow. this baby does the job. Transmission definitely cooler operation since the install. The install was simple and straight forward.

Dan L.

4/10/2015

so far so great. Tho sometimes I have to remind the transmission service guys to add a bit more fluid then they are use to.



by:
2009 Audi A6

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.



by:
Jeep Grand Cherokee

Can't say anything bad about the unit. It was installed in a Jeep Grand Cherokee that I use to haul trailers occasionally that weigh up to 6000 lbs. So far, I've never overheated the transmission at all, which I attribute to the addition of this cooler. Once again, thanks for a great product.



by:
2005 Honda Pilot

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.

Etrailer Expert

Rachael H.

6/13/2018

Our installers typically use some transmission fluid to make installing the rubber hose on the Insta-dapt fitting easier.



by:

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.



by:
1999 Toyota 4Runner

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!



by:
2012 Nissan Rogue

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.



by:

The trans cooler was easy to install. I had to go and buy some more hose and mounting screws to make it work but I knew that before I started. The hose was because of where I wanted it mounted. The trans cooler is keeping the transmission about 30 to 40 deg cooler then before.



by:
Ford Flex

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



by:

Nice inexpensive transmission cooler. Simple installation, although I didn't use the through radiator plastic ties supplied. Drops transmission temperatures well.



by:
2006 Chevrolet Colorado

for my 06 colorado with the 2.8l i4. also used the derale trans oil thermostat to help with warmup of trans fluid in winter. trans never gets above 190F now and the engine will overheat (212F) before the trans does. perfect upgrade for a light duty truck/van/car to provide a little bit of cooling at a compact size. very satisfied with the product



by:

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.



by:
2008 Chevrolet Silverado

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.



by:
1999 Ford Ranger

The tranny cooler was really simple to install. Everything you need is in the kit.It took about 45 minutes.
Great product. Delivery was quick.
Thanks to all, no picture at this time, trucks on the road.



by:

The transmission cooler, along with all the other products I ordered from etrailer was an excellent buy. they arrived on time and in excellent condition. The best benefit of ordering from etrailer is the superior customer service. I was even able to talk directly with one of their installers when I had a question.



by:
2001 Jeep Grand Cherokee

Easy install, works great. Installed on a 2001 Jeep Grand Cherokee. I tow a 19' boat and haven't had any transmission issues since.



by:
2002 Chevy Tracker

Installed on a 2002 chevy tracker with ease. very well made and all parts provided were well thought out for the installation.



by:
2013 Dodge Grand Caravan

Have not installed yet but the product looks great. Etrailer.com's service is so fast it's amazing. Dealt with them before and will not hesitate to deal with them again in the future. Great company.



by:
2007 Honda Pilot

I was able to install this and the PS cooler in one afternoon. I am not a mechanic, but I am fairly handy. Your milleage may vary. All the parts were correct and fit my 2007 Honda pilot fine.



by:

Easy to follow instructions. You will need to remove the front clip to install. Nothing too difficult.



by:
Honda Odyssey

hose provided could have been a little longer, but overall product was a good fit for our Honda Odyssey



by:

Good reliable cooler and really good shipping and tracking!



by:
2007 Chrysler Pacifica

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

Ron

5/13/2015

Best thing iv ever invested in an at a great price



by:

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



by:
2002 Acura MDX

The item is good; exactly what I expect from description. Shipment was fast and it was packed good to avoid damage. Will buy product again in this company. Very satisfied!


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Show More Reviews

See what our Experts say about this Derale Transmission Coolers

  • Transmission Cooler for 2012 Subaru Outback 2.5i W/CVT Transmission.
    If the CVT transmission has cooling lines running from the transmission to the radiator (some do, some don't), you can install a transmission cooler. A transmission cooler is an effective and inexpensive insurance policy for your transmission, especially if the trailer you'll be towing is close to the towing capacity of the vehicle or if you'll be towing in mountainous or hilly terrain. If your transmission does have lines, we recommend getting the biggest cooler that will fit in the available...
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  • How to Determine How Much Fluid Should be Added After Installing Transmission Cooler
    What you will want to do is check the transmission fluid level after installing the Derale part # D12906 and then add as much as needed. Most likely around a 1/2 qt would be needed but that will depend too on if you spill any fluid (most do) and how long of lines you use.
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  • What Transmission Cooler Kit is Best for a 2001 Saturn L300
    The D15505 is a bit larger than what a 2001 Saturn L300 would need or could fit. There are 5 recommended kits for your L300 based on the vehicle size and towing capacity. I have added a link to them below. Transmission kits are not vehicle specific. However, you need to make sure you have space to accommodate the cooler. On each of the cooler pages, you can find the dimensions of the cooler. Measure the space on your vehicle where you would like to mount the cooler and make sure you have...
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  • Best Rear Hitch Options 2016 Montana High Country 362RD 5th Wheel
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  • Transmission Cooler for 2017 Ram 1500
    The Derale Series 6000 cooler part # D12906 would work on your 2017 Ram 1500. For a truck I wouldn't' recommend this as my first choice as it's a little on the smaller size and not the most efficient of designs. Instead I would have recommended something like the # D13503 which is much more efficient at cooling.
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  • Transmission Cooler Options For 2014 Toyota Tundra SR5 4.6L
    We have class I # D13611, Class II # D12906, Class III # D12903 and Class IV # D12904 coolers for your 2014 Toyota Tundra SR5 with the 4.6L. I would suggest getting the Class IV just to get the most cooling for the purchase. They all install relatively the same so I've included an installation video to help you do it on your own!
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  • Recommended Transmission Cooler For 2005 Toyota 4Runner
    We do offer quite a few transmission cooler kits for your 2005 Toyota 4Runner, but we do not offer replacement hard line or connectors to attach to your transmission. You will need to get those parts from a local auto parts store. For a transmission cooler I recommend the Derale Dyno-Cool Tube-Fin Transmission Cooler Kit # D12906 which is ideal for mid-sized trucks and SUVs like your 4Runner. This kit includes hose, mounting hardware, and hose clamps, but since we have not had a chance...
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  • Does the Derale Transmission Cooler Kit Come with What is Needed to Install on a 1997 Chevy Lumina
    The Derale Dyno-Cool Tube-Fin Transmission Cooler Kit, # D12906, comes with everything you will need to mount and install it on your 1997 Chevy Lumina. The system installs in line with your current transmission hoses. I have included an FAQ article on Transmission Coolers below. There is a lot of helpful information, including the best places to mount the unit. I have also included a video showing installation of a transmission cooler. Installation will be similar on your vehicle.
    view full answer...
  • Recommended Derale Transmission Cooler for 2012 Toyota RAV4 with 3.5L V6 Engine
    Adding a supplementary transmission cooler to a vehicle that tows a trailer is a great way to reduce the thermal stress on the transmission. For your 2012 Toyota RAV4 with the V6 engine the most popular cooler is the Class III Derale # D13503, and this also happens to offer the highest cooling efficiency of all such products available for your RAV4. This is a complete kit with all needed parts. I linked a couple of help articles on the topic of transmission coolers.
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  • Weight Distribution System For 1997 Mercury Mountaineer Towing Aspen Trail Trailer
    I was able to find the owners manual for the 1997 Mercury Mountaineer and the 2-wheel drive can tow 6,700 lbs and the all-wheel drive can tow 6,500 lbs. Since the dry weight of the trailer is 4300 lbs more than likely you will be right at the towing capacity of the Mountaineer when the trailer is loaded. Because you are close to your towing capacity of the Mountaineer I definetly recommend a weight distribution system but the Curt Weight Distribution System with Shank - Pin-Style Trunnion...
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  • Recommend A Transmission Cooler For 2011 Subaru Outback V6 Towing Over 2000 Pound Trailer
    The item you selected, the Derale Transmission Cooler, part # D12906 will work on your 2011 Subaru Outback as long as you have room to mount it on your vehicle. The ideal place to mount a transmission cooler for maximum cooling efficiency is behind the grill of your 2011 Subaru Outback but in front of the radiator. You will want to measure at the front of your vehicle to make sure there is room to mount part # D12906 as it measures 13 inches wide and 7-1/2 inches tall. Another Transmission...
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  • Installation of Derale Transmission Cooler on 2009 Isuzu Truck
    The Isuzu KB300 is the sold as the D-Max in the states. To remove the grille you will start by removing fasteners on the top of the trill underneath the hood. Once you have removed those fasteners and the top panel is loose then you will have 4 clips on the bottom to release to pull the grille straight out the front. Be careful not to pull up as that may break the tabs on the bottom of the grille that hold it in place. Once you have gained access you will be able to install a transmission...
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  • Transmission Cooler Recommendation for a 2005 Nissan Pathfinder 4X4 SE and 6K Trailer
    For a trailer weighing 6,000 pounds I recommend going with a stacked-plate cooler because they will be the most efficient and will provide the best cooling compared to the other cooler options. For a kit you can use # D13403. For the best cooling you can get a cooler that comes with its own fan like # D13950. This will provide the optimum cooling no matter where the unit is mounted. I have included a link to our FAQ article on transmission coolers for you.
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  • Transmission Cooler Recommendation for 2012 Toyota RAV4
    For your 2012 Toyota RAV4 the Derale cooler part # D12906 would be a great option. We normally recommend going with the largest cooler that will fit in front of the radiator. In the case of this cooler it measures 13" Wide x 7-1/2" tall x 3/4" so you would need to measure the available room you have. A more efficient cooler that's a bit smaller is the part # D13503 which measures 11" Wide x 8-3/4" tall x 7/8" deep.
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  • Transmission Cooler Compatible With The 5.3L V8 In My 2007 Chevrolet Tahoe
    We do carry a variety of Derale Transmission Coolers for your 2007 Chevy Tahoe. If you are looking for a class I Plate-Fin cooler, here it is # D13611. If you need a class II get the Derale Dyno-Cool Tube-Fin Cooler # D12906. There is a class III Plate-Fin available too, part # D13503 and also a class IV Tube-Fin # D12904. The difference between the Plate-Fin and Tube-Fin style is that the plate and fin models can cool better than the tube and fin models. Also, the higher the Class of...
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  • Transmission Cooler and Thermostat for a 2011 Subaru Forester
    Transmission fluid cannot be overcooled. But in the winter when the weather is cold you would either need to let your 2011 Subaru Forester warm up a little longer or you can install a thermostat with the cooler so that it will only send fluid through the cooler once the temperature is high enough. You can use Derale Fluid Control Thermostat Kit w/ 3/8" NPT Ports Item # D13011 with mounting bracket kit # D25793. The fluid will bypass a cooler, such as # D12906, if the fluid temperature...
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  • Recommended 7-Way Connector And Trailer Hitch Receiver For 2014 Honda Odyssey
    I would be happy to help you get set up with all of the components you will need to tow an ultra lite RV trailer with your 2014 Honda Odyssey. Starting with the trailer hitch receiver the Curt Trailer Hitch Receiver # C13068 is a great option which offers a maximum tongue weight rating of 350lbs and maximum trailer weight rating of 3500lbs. Keep in mind that your 2014 Honda Odyssey can only tow up to 3500lbs with 2 passengers and requires a transmission cooler to be installed. Since the...
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  • Where is the Best Location to Mount the Derale Dyno-Cool Tube-Fin Transmission Cooler Kit
    The Derale Dyno-Cool Tube-Fin Transmission Cooler Kit, part # D12906, should be mounted after the radiator. So it would be in line from the fluid return line, this is the recommended way to install part # D12906. For mounting the unit, it is recommended that part # D12906 be mounted behind the grill and in front of the Air Conditioning Condenser Core, (see video link for reference). You can mount part # D12906, between the condenser core and the radiator but it will cut down on the cooling...
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  • What to do if a Transmission Cooler Line Comes off and Fluid is Leaked
    It really is hard to say, your best bet would be to repair the line if you have not already. Fill the transmission up with the appropriate amount of fluid and then take it to a transmission repair shop to have them check it out. Hopefully you get lucky, but there could be a wide range of potential internal problems depending on how long the vehicle was attempted to be driven and the temperature of the transmission.
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    Image 1 for
  • Transmission Cooler Recommendation for a 2008 Honda Pilot
    The main differences between the available transmission coolers is the style of the coolers and the size. There are style that are more efficient that others, and obviously the bigger the cooler the more efficient it is as well. The tube-and-fin style has a tube that carries the transmission fluid through the cooler. It is also distinguished by its turbulators, which agitate the fluid to get more of it to contact the aluminum in the tube. Aluminum fins are attached to the outside of the...
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  • Electric Fan For 1999 Ford F250 4x4 Light Duty
    Yes, the Flex-a-lite 16" Trimline Reversible Electric Radiator Fan # FLX116 is a confirmed fit for your 1999 Ford F250. As far as other items to consider if you're towing include a transmission cooler kit # D12906 with required adapter # D13025 is an additional upgrade that would help avoid potential overheating issues.
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  • Will Flex-a-lite Direct Fit Transmission Cooler Fit the 2016 Toyota 4-Runner 4x4
    If your 2016 Toyota 4Runner is 4.0L V6 Engine - 246 C.I. - 4WD, this Derale Dyno-Cool tube fin transmission cooler, part # D12906, is confirmed to fit. This transmission cooler kit provides additional cooling to protect your transmission. Cooler transmission oil gives more reliable, consistent shifts under racing conditions and prevents transmission damage under extreme towing conditions. The overall dimensions are 13" wide x 7-1/2" tall x 3/4" deep.
    view full answer...
  • 2006 Toyota RAV4 Transmission Cooler Recommendation
    As long as the transmission of your 2006 Toyota RAV4 has external lines you can install a transmission cooler. If you find the radiator there should be two metal lines that run to it that would be used for the factory cooler. You can also check out the transmission, if you find lines running from it those can be used for installing a cooler. The part # D12906 is a very popular option that would work well as long as you have room for it. I actually have it on my car and it does a great...
    view full answer...
  • Could a Fairly Handy Person Install a Transmission Cooler on a 2001 Dodge Grand Caravan
    A fairly handy person could install a transmission cooler onto a vehicle pretty easily. I have installed a cooler on two of my cars without a problem and I consider myself fairly handy. I attached an installation video of a transmission cooler being installed onto a vehicle to give you an idea of what it is like. Most vehicle will not require the removal of the front end like the vehicle in the video, so do not let that discourage you. I also attached an FAQ article on transmission coolers...
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