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Derale Series 9000 Plate-Fin Transmission Cooler Kit w/ NPT Inlets - Class I -Extra Efficient

Derale Series 9000 Plate-Fin Transmission Cooler Kit w/ NPT Inlets - Class I -Extra Efficient

Item # D13611
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11" Wide x 3-7/8" tall x 1-1/4" deep, radiator-style heat exchanger improves the performance and overall functioning of your vehicle's transmission. Includes hose-barb adapters to fit the 1/2" NPT inlets. Lowest Prices for the best transmission coolers from Derale. Derale Series 9000 Plate-Fin Transmission Cooler Kit w/ NPT Inlets - Class I -Extra Efficient part number D13611 can be ordered online at or call 1-800-940-8924 for expert service.
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  • Reviews (65)
  • Q & A (0)
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  • Why etrailer?

Derale Transmission Coolers - D13611

  • Plate-Fin Cooler
  • Car
  • With 1/2 Inch NPT
  • 11W x 3-7/8T x 1-1/4D Inch
  • Derale
  • Standard Mount

11" Wide x 3-7/8" tall x 1-1/4" deep, radiator-style heat exchanger improves the performance and overall functioning of your vehicle's transmission. Includes hose-barb adapters to fit the 1/2" NPT inlets.


  • Prolongs life of transmission
  • Improves overall performance
  • Prevents heat-related failures
  • Has furnace-brazed aluminum construction and 1-1/4" wide turbulator plates for more efficient cooling
  • Includes complete mounting kit, OEM spec hose with stainless steel clamps, Insta-dapt radiator adapter and hose-barb fittings
  • Sleek design makes this ideal for use in compact cars


  • Inlets: 1/2" NPT
  • Fittings: 1/2" NPT x 3/8" hose barb
  • Overall dimensions: 11" wide x 3-7/8" tall x 1-1/4" deep
  • Distance between inlets: 8-7/8"
  • Mounting dimensions: 6-3/4" wide x 3" tall
  • 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.

One of the more popular cooling systems available, the radiator-style, plate-and-fin heat exchanger provides increased surface area so that fluids can spread out along the finned chambers to cool faster. In addition to the increased surface area, this cooler also features turbulator technology, whereby fluids are agitated continuously, not only to facilitate heat transfer, but also to prevent any undesirable drop in pressure.


13611 Derale Series 9000 Plate and Fin Heat Exchanger with Installation Kit

Installation Details D13611 Installation instructions

This Product Fits The Following Vehicles

Customer Reviews

Derale Series 9000 Plate-Fin Transmission Cooler Kit w/ NPT Inlets - Class I -Extra Efficient - D13611

Average Customer Rating:  4.8 out of 5 stars   (65 Customer Reviews)

11" Wide x 3-7/8" tall x 1-1/4" deep, radiator-style heat exchanger improves the performance and overall functioning of your vehicle's transmission. Includes hose-barb adapters to fit the 1/2" NPT inlets.

2006 Dodge Dakota

i recived my Derale Series
9000 Plate-Fin Transmission Cooler Kit w/ NPT Inlets - Class I -Extra Efficient - D13611 and i really like it its well built and it look to be heavy duty and am looking forward to installing it.thanks again for a great item.

Its excellent inproved the performance of my truck 100 I am a very satisfy customer.
lopez - 07/30/2015


The cooler was easy to install,the instruction were easy to follow. I did check the oil temp after pulling a 4000 ft grade pulling a camp trailer with an electronic temp probe and there was a 50 deg temp drop thru the cooler.

worked as described
Steven - 07/14/2020

1999 Chevrolet Corvette

I have been happy with the Derale transmission cooler. Installation was simple enough and one year later it is still working fine

I actually have been very pleased with the performance. That was my third installation and all of them are working great . Thanks for asking.
7502yuma - 01/14/2018

1990 Dodge Ram Pickup

My original transmission cooler sprung a leak on my 1990 dodge pickup and a direct replacement couldn't be found. Etrailer had a cooler that would fit and do the job. Would highly recommend them to solve your problems and supply what's needed.


Hose could be a little longer for non professionals cutting too short.
I would recommend buying extra hose too install. Overall easy too install and works great




Came quick and as described !
I plan
to order more products from etrailer very soon

2012 Chevrolet Silverado

Fittings came contaminated with metal shavings from machining and wouldn't even fit in to the cooler really poor quality. If this is in the fittings who knows whats in the cooler. Complete waste of time do not buy


The order I received was what ordered I’m happy to see it quick delivery and fast thanks for service I will dealing with you in future for other parts thanks ago excellent job. Mike

2007 Toyota 4Runner

would have been been better had the shipping dept. not covered a lot of the info printed on the out side of the box with NON-removable stickers.

2002 Chevrolet Avalanche

Great product, works, fits perfectly. It s everything I was expecting.

2013 Ram 1500

It was exactly what I ordered and it only took 2 days to get.


Arrived quickly, install was not too di fficult.


worked as described

2011 Subaru Forester

Pretty easy to install. Arrived quickly too! I am happy with this purchase.

Patrick, the product is fine. I have no complaints. Thank you, Terri
terri h - 05/28/2015

2010 Nissan Altima

Unit received as promised. Thank you!

2001 Nissan Frontier

all re my bad all was in lg box separate small boxes


Perfect. Your company rocks. So helpful. Thank you.


Extremely well made product.


Great product at a good price.

2003 Toyota 4Runner


2009 Ford Escape





Review from a similar Series 9000 in Transmission Coolers

My vehicle originally did not have a transmission cooler. After warming up, my transmission temperature would typically be 100 degrees higher than the ambient air temperature, whether moving or stopped. Towing the largest enclosed U-Haul trailer (6'x12') would raise the temperature to about 120 degrees above ambient.

After adding this cooler, the transmission stays about 70 degrees higher than the ambient air temperature on the highway, and 80-85 degrees above ambient while parked or driving in slow traffic. I haven't towed that same U-Haul trailer since adding the cooler, but towing a much larger (8.5'x20') enclosed trailer raises the temperature to about 110 degrees above ambient.

If you can find a spot the cooler will physically fit, it should work for your vehicle. You may have to get creative to solidly mount it. I used an angle grinder to remove part of a factory brace. When doing work in this area of your vehicle, be careful not to puncture the AC condenser! If you do, like I did, you will have to replace it. Some AutoZone locations will rent a vacuum pump and manifold gauge set. Doing your own repair means the total repair cost is only the sum of the new AC condenser and refrigerant.

The inlet/outlet NPT fittings on this cooler need to be tighter than you think. I was worried about stripping the threads, and didn't tighten them enough at first. I ended up removing my bumper cover multiple times to tighten them until they stopped leaking. I found the best way to detect a leak was to zip-tie a folded paper towel below the fitting. If it turned red, there was a leak. For my application, I would have preferred built-in 3/8" hose barb inlets instead of the 1/2" NPT fittings.

Show More Reviews

Ask the Experts about this Derale Transmission Coolers

  • 2011 Nissan Maxima Transmission Cooler Installation Recommendations
    The Derale Series 9000 Plate-Fin Cooler # D13611 would be an excellent choice for use on your 2011 Nissan Maxima. Transmission coolers are not vehicle specific, but there are coolers that are recommended based on available mounting locations of your vehicle. It is always recommended to use the most efficient mounting location that is possible. Typically this is located between the AC condenser core and the grille. If the ideal and most efficient mounting location is not possible, then...
    view full answer...
  • Are Additional Fittings Needed to Install Transmission Cooler on a 2008 Nissan Armada SE 5.6L
    You should not have to worry about that warning since it is uncommon. The transmission cooler # D13611 comes with an Insta-dapt fitting that you can use to avoid have to flare the steel or aluminum lines. The worst case scenario is that you would have to flare the metal lines, if applicable. If the lines are aluminum you can flare them with a Phillips screwdriver. Steel lines would require a flare tool which your local auto parts store should have. But I do not think that will be necessary...
    view full answer...
  • Compatibility of Transmission Cooler with Automatic Transmission on 2006 Toyota Corolla
    You will want to install the cooler on the return line. You can identify which one is the return by starting out with the engine cold, starting it, shifting into gear for about 10-seconds and then back to park, then shutting the engine off. Feel the two lines; the cooler one is the return line. Please note that when you add a cooler like Derale # D13611 (or a larger one) that is confirmed to fit your car you naturally also add a requirement for additional fluid. Toyota insists that only...
    view full answer...
  • 2014 Honda Accord V-6 Transmission Cooler Availability
    There will be a built in transmission filter on your 2014 Honda Accord. Changing the transmission fluid that often really wouldn't be necessary. If you can find external transmission lines on your 2014 Honda Accord you can install a transmission cooler. For a vehicle like yours that won't be towing anything ever most likely you wouldn't really need one. But they can't hurt. The part # D13611 is a pretty small cooler that would work as long as you find external lines on your transmission....
    view full answer...
  • Can Transmission Cooler be Installed on a Vehicle with Sealed Transmission
    Sealed transmissions make installing a transmission cooler a bit more interesting since there isn't an easy way to add or check fluid. There may not be a dipstick on your transmission, but there is drain and fill plug. You are going to have to use a lube pump to get the proper amount of fluid in the vehicle so honestly your best option is going to be to have a transmission shop do the install since they will have the equipment needed. Prefilling the cooler might get you pretty close...
    view full answer...
  • Transmission Cooler for a 2016 GMC Terrain Denali with 3.6 Liter V8
    Yes you can use the Derale transmission cooler # D13611 on your 2016 GMC Terrain. The cooler will help the fluid run at a lower temperature which is better for the transmission so that you will get the most life out of it. Installation is not all that difficult. Take a look at the video I have linked showing an example installation on a vehicle. Installation will be similar on your Terrain.
    view full answer...
  • Can the Average Do-It-Yourselfer Install a Transmission Cooler on a 2007 Chrysler Town and Country
    Installing a transmission cooler is not very difficult and I have every confidence that you will be able to install the Derale Transmission Cooler, # D13611, on your 2007 Chrysler Town and Country. Make sure you have the necessary tools. Your mechanical skills should serve you well for this installation. I can give you some installation tips. Transmission coolers are designed to be mounted flush against either the radiator or the AC condenser core. For maximum cooling ability, the heat...
    view full answer...
  • Aftermarket Transmission Cooler Installation for Mitsubishi Vehicles
    It would not surprise me if Mitsubushi OEM transmissions had a function that stopped the flow of transmission fluid out of the transmission when the transmission is cold. I do not believe that this option would be installed outside of the transmission, because there would need to be a bypass hose and valves in the transmission output and return lines, causing a complicated installation at the factory. The Derale Series 9000 Plate-Fin Transmission Cooler Kit, item # D13611, does not have...
    view full answer...
  • Best Transmission Cooler Fit for the 2010 Mercury Mariner & 2011 Ford Escape
    The best transmission cooler that will fit and works best for your 2011 Ford Escape and 2010 Mercury Mariner is the Derale Series 9000 Plate-Fin Transmission Cooler Kit w/Barb Inlets, # D13611. This fan measures 11" wide x 3-7/8" tall x 1-1/4" deep to provide the correct fit on your vehicles. This cooler works the best because it features turbulator technology, whereby fluids are agitated continuously, not only to facilitate heat transfer, but also to prevent any undesirable drop in pressure.
    view full answer...
  • Transmission Fluid Needed for Transmission Cooler Installation
    When you install the Derale Series 9000 Plate-Fin Transmission Cooler # D13611 a little extra fluid will be needed. The last part of the installation instructions have you add fluid as needed and then drive the vehicle for a little while and recheck the fluid level. Not much additional fluid is needed unless much is spilled when you disconnect and reconnect the lines. Normally just a few ounces of fluid is needed.
    view full answer...
  • How Does Supplemental Transmission Cooler Work with Factory Cooler of 2003 Ford Escape
    When installing a transmission cooler the best solution is to install the supplemental cooler after the factory cooler so that you get the cooling power of both coolers. That is what I would recommend when installing an a cooler on your 2003 Ford Escape.
    view full answer...
  • Transmission Cooler for 2005 Honda Accord V6.
    The Derale # D13611 transmission cooler isn't designed to replace the factory transmission cooler, it's designed to supplement it. The cooler installs inline on the return line from the factory cooler back to the transmission. The heat exchanger portion would ideally be installed directly behind the grillwork, in front of the radiator. If you use the provided link, my buddy David will run through how the cooler works. I'll also link to some help articles about transmission coolers.
    view full answer...
  • Transmission Cooler Recommendation for a 2003 Acura MDX
    The best way to pick out a fin style transmission cooler for your 2003 Acura MDX would be to measure the space in front of your radiator and use the largest transmission cooler you could fit there. A popular cooler with other owners of MDX's like your is the Derale Cooler part # D13503. The dimensions of this cooler are 11" Wide x 8-3/4" tall x 7/8" deep. I attached an install video plus FAQ articles for you to check out as well.
    view full answer...
  • Will Aftermarket Radiator Solve Leaking Transmission Cooler Problems in 2006 Nissan Xterra
    From what I can recall, the problem with the mid 2000's Nissan truck radiators was that the combined transmission cooler/radiator would develop a leak that allowed coolant to mix with the transmission fluid, which damaged the transmission. Installing an 'OEM quality' aftermarket radiator with the integrated transmission cooler is the recommended repair, which will solve the leakage problem. Over the years, we've gotten numerous questions about this from folks who just want to cap off...
    view full answer...
  • Transmission Cooler for a 2005 Nissan Pathfinder
    Some Nissan vehicles like the 2005 Nissan Pathfinder can have problems with the transmission and radiator. If it were me I would look for any signs of leaking fluid at the tranny and radiator. Also, if you notice anything out of the ordinary with the way the vehicle changes gears, I would avoid it. The problem that usually occurs is that the radiator will leak coolant into the transmission cooler cavity. Once you get foreign materials or fluids in the transmission its pretty much done. The...
    view full answer...
  • Can Transmissions and Engine Oil Coolers be Mounted Vertically
    As long as the fins on the Derale Cooler # D15604 or # D13611 are facing out so they can get airflow then you can mount them vertically if you needed to. I have included a link to a video review of transmission cooler # D13611 for you and an FAQ on oil coolers for # D15604.
    view full answer...
  • Recommended Transmission Cooler for 1994 Nissan Pathfinder
    I typically recommend choosing the largest transmission cooler that will fit into the available space. The best place to install a transmission cooler is directly behind the grille, in front of the radiator and A/C condenser. Choosing the largest available cooler like part # D13503 is a good choice, because you cannot over-cool a transmission. The cooler measures 8 by 11 inches, and is 7/8 of an inch thick. The cooler installs inline with the transmission return line that runs from the...
    view full answer...
  • Recommended Transmission Cooler for 2006 Saturn Vue 4WD
    Although the Derale # D13611 transmission cooler would work well with your Saturn Vue, we typically recommend using the largest cooler that will fit behind the grille of your vehicle. The ideal mounting location is directly behind the grill, in front of the radiator and A/C condenser. Because a transmission cooler allows airflow through it, there is not a worry that it will block or hinder the operation of the radiator or condenser behind it. A larger cooler like part # D13502, which measures...
    view full answer...
  • Which Transmission Cooler for 2005 Nissan Frontier
    The best place to install a transmission cooler is directly behind the grille, in front of the radiator and A/C condenser. We recommend choosing the largest cooler that will fit in the space available, so you will need to measure to see how much room you have. You cannot over cool a transmission. The # D13503, which measures 11x8-3/4x7/8 inches is what I would recommend, assuming that there is enough room behind the grille. You might need to remove the grill and front bumper cover in...
    view full answer...
  • Which Transmission Cooler for 2004 Nissan Titan to Supplement or Replace OEM Cooler
    The transmission coolers we offer are not OEM replacements. They are intended to supplement the existing OEM cooler for demanding applications like towing or for continuous use in very hot conditions. You might start by reviewing the attached article which provides plenty of useful information about transmission coolers in general. Coolers are NOT vehicle-specific; you can use as large a cooler as you have the space to install it. If your Nissan OEM cooler is a combination radiator/transmission...
    view full answer...
  • Transmission Cooler Recommendation for a 1990 Dodge Caravan
    There are several coolers recommended for your 1990 Dodge Caravan. I have incldued a link to them for you. The type of coolant the vehicle uses is not a factor. Transmission coolers are not vehicle specific and are flow through devices with no moving parts so the type of fluid and the vehicle are not issues. We recommend installing the largest cooler that will fit in the vehicle. This is because transmission fluid cannot be over cooled and because a larger cooler will be more efficient....
    view full answer...
  • Can the Factory Transmission Cooler be Replaced on a 2006 Nissan Xterra
    The factory transmission cooler is likely inside of the radiator on your 2006 Nissan Xterra so the only way to replace it would be to replace the radiator. You can probably find an aftermarket one for less money than an OEM replacement from Nissan. I can tell you that what they want to charge, assuming that includes parts AND labor, is not a bad price for that type of repair. Bypassing the factory cooler would be the best option if you don't want to replace the radiator. If you do that...
    view full answer...
  • Larger Transmission Cooler Recommendation to Replace Small One Where Fluid Still Gets Hot
    The transmission cooler part # D13611 that you referenced is a pretty small cooler. Since you are towing on steeper grades a larger cooler would be your best option. If you can fit the part # D13503 instead of what you currently have this would be a much better option. This cooler measures 11" Wide x 8-3/4" tall x 7/8" deep. Basically the larger the cooler the more efficient it will be at cooling the fluid. Since you already have the hard part done of installing a cooler all you would...
    view full answer...
  • Transmission Cooler Recommendation for 1996 Subaru SVX
    The transmission cooler I recommend for your 1996 Subaru SVX is the Derale Series 8000 Plate-Fin Transmission Cooler Kit with Barb Inlets, Class III # D13503. This cooler will provide a large surface to help further cool the transmission fluid, with the cooler measuring 11 inches wide x 8-3/4 inches tall x 7/8 inches deep. The plate and fin style transmission cooler offers an increased surface area for cooling over the more traditional tube and fin style. Derale's # C13503 cooler a great...
    view full answer...

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