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25% Off Select Parts and Accessories
Receive 25% Off Your Online or In-Store Purchase. Use promotional code MMJ25 at checkout to receive discount. Not valid in combination with any other discounts, promotions or items already on sale. Not valid on gift cards, special orders, installed merchandise, commercial or fleet purchases. Those products that are included will be displayed in product search results and product detail pages. INCLUDES the following categories: Starters, Alternators, Fuel Pumps, Radiators, Shocks & Struts, Chassis, CV Axles, Batteries, Ignition, Window Motors, Wipers, Appearance Chemicals, Car Wash Accessories, Floor Mats, Lift Equipment, Hand Tools, Headlamps and Bulbs. Excludes the following brands: Powerstop, Razor, Traxxas, Superchips, Hypertech, Edge, Bully Dog, Diablo, Edelbrock, Holley, NOS, Proform, Specialty Auto, Autometer, Accel, K&N, Kenwood, Pioneer, Sony, Thule, Thule Karrite, JVC, Flowmaster, Hurst, B&M, MSD, Moog, Wagner and BBK Performance. Valid online until 2:59 am EST on 5/1/17.

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  • Part #: 678|
  • SKU: 8126328

Available today

Pay in Store Available

    • Size: 3/4" X 11" X 9-1/2"
    • Pick-up trucks and vans, class "C" motor homes , travel trailers to 24 ft
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Hayden Rapid-Cool Plate & Fin Transmission Cooler

Premium style transmission cooler kit. Coolers are a compact plate and fin design. Kits contain cooler, hose and mounting hardware.
  • Size: 3/4" X 11" X 9-1/2"
  • Pick-up trucks and vans, class "C" motor homes , travel trailers to 24 ft
  • GVWR up to 24,000 lbs, towing up to 5,000 lbs
  • Patented internal turbulation increases heat transfer with minimal pressure drop

Thickness (IN)
Core (IN)
Length (IN)
Fitting Size
3/8" Push On
Height (IN)


Hayden Rapid-Cool Plate & Fin Transmission Cooler is rated 4.8 out of 5 by 4.
Rated 4 out of 5 by from Great product Keeps your transmission cooler, has everything you need to install it. But the hose that comes with the kit needs to be longer.
Date published: 2016-09-10
Rated 5 out of 5 by from Works great Installed this in a Suzuki Aerio that had a hot running transmission, causing slight slip when transmission was really hot. Installed this cooler and it immediately fixed the problem. Transmission is cool now and runs tight. I like the small compact size of this cooler, it fit perfectly in front of the A/C condenser radiator. Had to remove the bumper of the car so I could get a perfect fit. The kit came with everything need, nothing else was needed to purchase separately. Plenty of hose came in the kit for the installation. I live in a hot climate, and install external transmission coolers on all my cars, you can immediately notice a difference in performance with a cooler, and transmissions last forever with coolers installed.
Date published: 2016-03-31
Rated 5 out of 5 by from I cant wait to get this installed in my suburban I cant wait to get this installed in my suburban, I have the factory heavy duty towing package. But I know replacing the factory trans cooler with this will be a huge improvement.
Date published: 2015-09-18
Rated 5 out of 5 by from Hayden Transmission Cooler was as expected Pep Boys was the only place that would install the Hayden Transmission Cooler on my 2008 Toyota 4Runner. I couldn't get any other auto service place to install it. So Kudo's to Pep Boys
Date published: 2015-05-05
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