Max-Flow Arctic Allison Transmission Cooler, 2001-2005 LB7/LLY

Part# MAX-TC-0105

$312.99 Includes Free Shipping.

WARNING: Cancer and Reproductive Harm - www.P65Warnings.Ca.Gov

Fits: 2001 thru 2005 Chevy Silverado/GMC Sierra 2500HD/3500HD LB7/LLY

The DmaxStore Arctic High Flow Allison Transmission Cooler is purpose built to keep your stock or built transmission running cooler than ever. With 15 more rows than the stock unit, your transmission will stay cool. If your transmission fluid temperatures are starting to increase, this is the solution to the problem. The DmaxStore Arctic High Flow Transmission cooler is much bigger than the stock unit. Boasting 56% more thickness and 53% more height, the DmaxStore cooler is a much heavier duty unit. With the increased size it offers increased cooling efficiency. The high quality powder coated finish will also insure that it lasts longer and stands up to the elements.


  • Heavy Duty Construction
  • Increased Cooling Capacity
  • 56% Thicker Core than OE
  • 53% Taller Core than OE
  • 188% More Cooling Rows Than OE


  • 1 - High Flow Arctic replacement Allison transmission cooler.


Tech Tip:

  • Does your truck have higher mileage and elevated transmission temps? It's probably time to freshen up the Transmission cooler. Over time the stock torque converter and internal clutch material can plug your trans cooler and reduce its cooling capabilities. We highly recommend our new Arctic transmission cooler anytime you rebuild or upgrade your transmission. This will insure transmission efficiency and longevity.

DmaxStore Notes:

  • When replacing the transmission cooler, you will lose about 1-2 quarts of transmission fluid. We recommend using Transynd Transmission Fluid
  • Core Dimensions: 12.5" x 7.75" x 2"
  • Fitment has only been verified with aftermarket Fleece. Other aftermarket lines have not been verified to fit.

Customer Reviews

Based on 4 reviews
good product

fits well not perfect but pretty good for how big it is. cooled down my transmission quite a bit about 25 degrees around town which is awesome. did have to get rid of the middle grille clip on my 2002 style truck which was annoying. Overall a good performing product.


Simple easy to follow instructions and makes a huge difference in temps, would definitely recommend!

Scott Moore

Detailed instructions were easy to follow, cooler is very well made and fits perfectly. Total time to install was about 1 hr.


My transmission temps are about 20 degrees cooler when towing after installing this item. It is a great upgrade! It was easy to install and looks good.