bing tracking image
  1. Transmission Coolers
  2. GMC
  3. Van
  4. 1975
  5. Derale
FITS 1975 GMC Van
Derale Dyno-Cool Tube-Fin Transmission Cooler Kit - Class II - Economy

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

Item # D12906
Retail:$51.47
Our Price: $43.60
You Save: 15%
Transmission Coolers
Confirmed to Fit
1975 GMC Van

4.1L I6 Engine

4.8L I6 Engine

5.7L V8 Engine

Will this fit?

To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.

Orders above $99 qualify for Free Shipping
Shipping Weight: 2 lbs
Add to cart
In Stock
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

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.

Product Images

In Use/Installed

Need help with installation?
Locate installers near me
The best technical support and full transmission coolers installation instructions. Great price Van transmission coolers and expert service. GMC Van, 1975 transmission coolers by Derale are available from etrailer.com. For expert service call 1-800-940-8924 to order your Derale Dyno-Cool Tube-Fin Transmission Cooler Kit - Class II - Economy part number D12906, or order online at etrailer.com.
  • All Info
  • Reviews (127)
  • Q & A (0)
  • Photos

1975 GMC Van - Derale Dyno-Cool Tube-Fin Transmission Cooler Kit - Class II - Economy

  • Tube-Fin Cooler
  • 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 GMC Van'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

Installation Details D12906 Installation instructions

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:
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:
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:
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:

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:
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:
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:
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:

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:

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



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!


25
126
Show More Reviews

See what our Experts say about this Derale Transmission Coolers

  • Can a Transmission Cooler Bypass the Factory Cooler on a 2007 Nissan Pathfinder
    A lot of people with Nissan vehicles are looking to bypass the factory cooler contained in the radiator like on your 2007 Nissan Pathfinder. The coolers we carry are designed to supplement the factory cooler although some people have used them to replace the factory cooler. You would want to go with the largest cooler possible if you bypass the factory cooler and the inlet/outlets on the radiator for the factory cooler will have to be plugged. Or instead of the largest cooler you would...
    view full answer...
  • 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...
  • Suitability of 2008 Jeep Compass for Towing Trailer Weighing 1800 Lbs
    If the weights you have given me are correct, you should be able to tow the trailer. Keep in mind that you are less than 200 lbs away from your towing capacity. Any extra gear on that trailer could place you over the towing capacity of your Compass which could possibly cause damage to the hitch or the vehicle. Since you are so close to the towing capacity of the vehicle, a transmission cooler would be a wise investment. I would recommend the Derale Dyno-Cool Tube-Fin Transmission Cooler,...
    view full answer...
  • 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...
  • 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...
    view full answer...
  • 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.
    view full answer...
  • 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...
    view full answer...
  • Installation of Derale Dyno-Cool Transmission Cooler on 2010 Nissan Titan 4x4
    The Derale Dyno-Cool Tube-Fin Transmission Cooler Kit - Class II - Economy # D12906 comes with the adapter fitting you need for your 2010 Nissan Titan 4x4. You won't need any additional part for this installation.
    view full answer...
  • Does a Transmission Cooler Need A Thermal Bypass for Sub-Freezing Weather
    I have not ran into any issues where there was a thermal bypass needed for below freezing temperatures when using the Derale Dyno-Cool Tube-Fin Transmission Cooler part # D12906. There is a lot of heat generated when all of the parts get moving in there and a cool transmission is a happy transmission. I can't see the cooler over cooling the fluids to a point that there would be any negative effects. For your power steering I rarely see the need to cool it. Even when hauling a trailer you...
    view full answer...
  • Secondary Transmission Cooler For A 2000 Honda Accord V6 Needed
    The best way to select the correct transmission cooler is by determining where there is enough space to mount it. The attached diagram shows the best three positions to mount the transmission cooler in order. Transmission coolers are more efficient when they receive maximum air flow. The "A" transmission cooler location in the diagram is 100% efficient so a larger transmission cooler is not needed to compensate for the loss of cooling power. My recommendation is the Derale Dyno-Cool...
    view full answer...
    Image 1 for Image 2 for
  • 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...
    view full answer...
  • 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.
    view full answer...
  • Transmission Cooler for 2007 Jeep Grand Cherokee
    The Derale # D12906 is a universal-fit aftermarket part that will fit your 2007 Grand Cherokee if the space behind the grille and in front of the A/C condenser and radiator can accommodate its 13 by 7-3/4 inch dimensions. If the available space is to small to allow installation of the D12906, we have smaller plate-fin style coolers like part # D13502 that are actually more efficient at cooling your transmission fluid. This cooler would typically be installed so it would be last in line...
    view full answer...
  • 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.
    view full answer...
  • Transmission Cooler Recommendation for a 2005 Acura MDX Towing a 3,750 Pound Boat and Trailer
    The Class of transmission cooler you use will depend more on where you can mount it. The most efficient place is in front of the AC condenser. You could then use a Class I cooler, like # D12901. If mounted behind the condenser, I would go with a Class II like # D12906. If mounted behind the radiator I would go with a Class III like # D13502. The problem is that the further away from the front of the vehicle a cooler is mounted, the less airflow it receives. The less airflow a coolers...
    view full answer...
  • 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.
    view full answer...
  • 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.
    view full answer...
  • Tips for Keeping a 2008 Chevrolet Colorado Cool While Towing a Trailer Into the Rockies
    It sounds like you have really done as much as you can to ensure that your 2008 Chevrolet Colorado has the advantage while towing. I think you stated the reason without realizing it, you are going up steep inclines while towing a trailer. Even without a trailer your vehicle will experience extra heat due to the strain of driving uphill. Add to that the weight of a trailer and whatever cargo that if put into the Colorado itself and that is why you cannot go 60-65 mph safely. The most efficient...
    view full answer...
  • 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...
    view full answer...
  • Transmission Cooler Recommendation for a 1996 Nissan Pathfinder Towing a 1900 lb Trailer
    There really is not a down side to using a transmission cooler on a vehicle. It has been proven that transmission coolers will prolong the life of a transmission. Especially when the vehicle is towing a trailer. I would strongly recommend you install one since you will be pulling a 1,900 lb trailer with your 1995 Nissan Pathfinder. The power switch might enhance the shift points so that it will perform better while towing, but it will not prevent excess heat from building up in your transmission...
    view full answer...
  • Is the Hose Included with Derale Transmission Coolers Long Enough for Install on a 2004 Honda Pilot
    The hose that is included with the Derale transmission cooler, # D12906, is long enough for typical installation locations, including in front of the radiator, as long as it is on the same side as the factory transmission cooler lines. It is entirely possible on any vehicle, including a 2004 Honda Pilot, that you may need to acquire additional hose. I have yet to have a customer complain about the hose not being long enough. I have included some helpful links on transmission coolers for you.
    view full answer...
  • Installing Transmission Cooler in 2006 Subaru Forester
    When installing your supplementary transmission cooler such as the economical Derale Dyno-Cool Tube-Fin Transmission Cooler # D12906 in your 2006 Subaru Forester you will want to locate the cooler in front of your AC condenser for maximum air flow and cooling efficiency. Please refer to the linked article. You want to install the supplementary cooler on the return line from the radiator. To determine which line is the return line you will want to start with your truck totally cooled off....
    view full answer...
  • Recommendation For Transmission Cooler On A 1995 Nissan Parthfinder 4X4
    To determine what kind of transmission cooler you will need depends on how much weight you will be towing and where you will be towing. If you will be towing a light load, less than 2,000 pounds, in flat driving conditions, your 1995 Nissan Pathfinder 4x4 will do fine with a Class I rated cooler. If you will be towing more than a 2,000 pound load through some hills, I would use a Class II or Class III cooler. I would recommend the Derale Series 8000 Plate-Fin Transmission Cooler, part...
    view full answer...
  • Trailer Hitch, Ball Mount kit, Trailer Wiring, and Transmission Cooler for a 2007 Toyota Sienna
    I can certainly make some recommendations for a towing set up on your 2007 Toyota Sienna. Starting with a trailer hitch, the most popular hitch for your vehicle is Draw-Tite # 75237. This is a Class III hitch rated for 4,000 pounds gross trailer weight, 400 pounds tongue weight. The trailer you plan to tow is right at this limited. If there is any way you can reduce the weight of the trailer some, it would be more ideal. I have included a link to the installation details and a video showing...
    view full answer...


< Previous
12



Do you have a question about this Transmission Cooler?


Info for this part was:

Employee Joe V
Test Fit:
Joe V
Employee Rick A
Test Fit:
Rick A
Employee Mike L
Expert Research:
Mike L
Employee Michael H
Expert Research:
Michael H
Employee Jeff D
Expert Research:
Jeff D
Employee Reno H
Expert Research:
Reno H
Employee Jameson C
Expert Research:
Jameson C
Employee John H
Expert Research:
John H
Employee Adam R
Expert Research:
Adam R
Employee Jeffrey L
Expert Research:
Jeffrey L
Employee Zack K
Video Edited:
Zack K
Employee Dustin K
Video Edited:
Dustin K
Employee Andrew K
Video by:
Andrew K
Employee Joshua S
Video by:
Joshua S
Employee DeAnne T
Updated by:
DeAnne T
Employee Daron K
Updated by:
Daron K
Employee Cole B
Installed by:
Cole B

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.