1. Transmission Coolers
  2. Derale
  3. Plate-Fin Cooler
  4. Class III
  5. With - 6 AN Inlets
  6. 13L x 4-7/16W x 2D Inch
Derale Stacked-Plate Transmission Cooler Kit, -6 AN Inlets - Class III

Derale Stacked-Plate Transmission Cooler Kit, -6 AN Inlets - Class III

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Transmission Coolers
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13" Wide x 4-7/16" 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. Lowest Prices for the best transmission coolers from Derale. Derale Stacked-Plate Transmission Cooler Kit, -6 AN Inlets - Class III part number D13401 can be ordered online at etrailer.com or call 800-298-8924 for expert service.
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  • Q & A (5)
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  • Why etrailer?

Derale Transmission Coolers

  • Plate-Fin Cooler
  • Class III
  • With - 6 AN Inlets
  • Derale
  • 13L x 4-7/16W x 2D Inch
  • Standard Mount

13" Wide x 4-7/16" 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.


  • Prolongs life of transmission
  • Improves overall performance
  • Prevents heat-related failures
  • Most efficient cooling system with the large surface area of the stacked plate design and turbulator technology
  • Furnace-brazed aluminum construction for great heat dissipation
  • Comes with built-in mounting brackets for easy installation
  • Includes mounting kit, OEM spec hose with stainless steel clamps, Insta-dapt radiator adapter and brass hose-barb fittings


  • Inlet size: -6 AN
  • Overall dimensions: 13" wide x 4-7/16" tall x 2" deep
  • Distance between inlets: 10"
  • Mounting dimensions: 2-7/8" tall x 12-1/4" wide
  • 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.

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.


13401 Derale Stacked Plate Transmission Heat Exchanger with Installation Kit

Item # D13401

Installation Details D13401 Installation instructions


Ask the Experts about this Derale Transmission Coolers

  • Transmission Cooler And Oil Cooler Recommendation For 2009 Ford Flex
    I spoke with my contact at Derale about your 2009 Ford Flex. I recommend the Derale Stacked-Plate Transmission Cooler, part # D13401. This type of transmission cooler is considered the most effective type of cooler because it allows fluid to spread over a larger surface. This cooler measures 13 inches wide by 4-7/16 inches tall by 2 inches deep. This kit comes with built-in mounting brackets for easy installation, the mounting kit, OEM spec hose with stainless steel clamps, Insta-dapt radiator...
    view full answer...
  • Recommended Transmission Cooler for 2008 GMC Sierra 1500 w/ 5.3L Engine
    Transmission coolers aren't vehicle specific. You can use virtually any of the offered transmission coolers, as long as it'll fit in the available space. The most efficient spot to install a cooler to ensure it gets maximum airflow is directly behind the vehicle grille, in front of the radiator. Since a truck like your Sierra will have lots of room behind the grille, you can get a larger cooler like part # D13503 that's actually less expensive, although there's no reason why you couldn't...
    view full answer...
  • Stacked-Plate Transmission Cooler for 2018 GMC Acadia SLT with V6
    Transmission and oil coolers are not vehicle-specific; you can essentially install any one for which you have the space available to install it. When it comes to coolers bigger is better. And if you want the best cooling even at lower speeds, such as when driving in mountainous areas, you might consider a remote-mount fan-powered cooler like the Derale Atomic Cool # D13950, an efficient plate-fin type cooler that will lower your transmission temperature even at low speeds since it does...
    view full answer...
  • Recommended Oil and Transmission Coolers for the Dodge Durango
    I reached out to my contact at Derale and he confirmed that the Derale Stacked-Plate Transmission Cooler Kit # D13401 and the Derale Stacked-Plate Engine Oil Cooler Kit # D15602 are universal fit and will work with your 2013 Dodge Durango 5.7L Hemi.
    view full answer...
  • Should the Factory Transmission Cooler be Removed When Installing an Auxiliary Cooler
    The aftermarket transmission coolers that we sell are designed to work with a factory installed unit. These coolers are not intended to replace the original factory cooler. For your vehicle, adding just an addition cooler will help cool down your transmission. The stacked-plate transmission cooler design, like # D13401, is the I recommend for your 2008 Ford F-150. The stacked-plate design will give you the most efficient cooling option for your set up. This cooler also only measures...
    view full answer...

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Info for this part was:

Expert Research:
Mike L
Expert Research:
Adam R
Expert Research:
Jeffrey L
Updated by:
DeAnne T
Updated by:
Daron K

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