Not Available
  • Direct fit for all 2011–2014 Chevrolet/GMC 6.6L Duramax (LML)
  • Stacked-plate construction for maximum durability and superior cooling
  • CNC-machined adapters make it easy to connect Mishimoto cooler to stock fluid lines or AN lines
  • 41% greater core volume than stock cooler
  • Note: Coupons and discounts do not apply to items in pre-sale
  • Additional features below
Features

PRODUCT FEATURES

  • Direct fit for all 2011–2014 Chevrolet/GMC 6.6L Duramax (LML)
  • Stacked-plate construction for maximum durability and superior cooling
  • CNC-machined adapters make it easy to connect Mishimoto cooler to stock fluid lines or AN lines
  • 41% greater core volume than stock cooler
  • 73% greater external fin surface area over stock cooler
  • Mishimoto Lifetime Warranty
  • Note: Coupons and discounts do not apply to items in pre-sale

DESCRIPTION

There’s no greater enemy for a transmission than heat. Whether your 2011–2014 Chevy/GMC 6.6L Duramax is a dedicated tow vehicle, hardworking fleet truck, or a daily driver with a liking for the drag strip, you need to ensure that your transmission runs cool.

Luckily, Mishimoto has developed a direct-fit transmission cooler to do just that. Our 2011–2014 Chevy/GMC 6.6L Duramax transmission cooler utilizes a stacked-plate design for maximum durability and powerful cooling. Aside from its durable construction, this transmission cooler is significantly larger than the stock core. The Mishimoto transmission cooler boasts a 41% greater core volume, and 73% greater fin surface area than the stock 2010–2014 Duramax transmission cooler.

The included CNC-machined adapters connect directly to the stock transmission cooler lines for leak-free cooling. Direct-fit brackets and tailor-made hoses make installation easy. Like all Mishimoto products, this transmission cooler is backed up by our Lifetime Warranty with Accident Protection for worry-free cooling as long as you own it.

PURCHASE INCLUDES

(1) Mishimoto Stacked Plate Transmission Cooler
(2) CNC-Machined Quick-Disconnect to Hose Barb Adapters
(2) Stock-style Quick-Disconnect Fittings
(2) Transmission Hoses
(2) Mounting Brackets
(4) Worm Gear Clamps
(1) Zip Tie
Mounting Hardware
Mishimoto Lifetime Warranty

NOTES

Does not fit K2 chassis vehicles

TECH SPECS

VEHICLE SPECS

Engine Codes 6.6L Duramax
Chassis Codes LML

PRODUCT SPECS

SKU MMTC-DMAX-11SL
Core Height 5.78"
Rows 13
Core Thickness 1.25"
Core Length 27.95"
ENGINEERING

Cooling to the Duramax – Transmission Cooler, Part 3: Adapt and Overcome

October 29, 2020

This 2001-2014 Chevy / GMC 6.6L Duramax Transmission Cooler is now available! Click here to check it out! With so many model years to cover, our biggest challenge would be making one cooler fit them all. But we had a plan. Our 2001-2014 Chevy / GMC Duramax transmission cooler blog so far has focused on … Continue reading Cooling to the Duramax – Transmission Cooler, Part 3: Adapt and Overcome →

Read More 

Cooling to the Duramax – Transmission Cooler, Part 3: Adapt and Overcome

Cooling to the Duramax – Transmission Cooler, Part 2: Measure Twice

October 29, 2020

This 2001-2014 Chevy / GMC 6.6L Duramax Transmission Cooler is now available! Click here to check it out! No matter how many trucks I write about, I’m always surprised how often a critical part of the drivetrain is underdeveloped. It’s even more surprising when a truck built for towing and hauling has a major flaw … Continue reading Cooling to the Duramax – Transmission Cooler, Part 2: Measure Twice →

Read More 

Cooling to the Duramax – Transmission Cooler, Part 2: Measure Twice

Transmission Cooling to the duraMAX – 2001-2010 Chevy /GMC Duramax Transmission Cooler, Part 1 – Stock Review

October 29, 2020

This 2001-2014 Chevy / GMC 6.6L Duramax Transmission Cooler is now available! Click here to check it out! Extreme heat is always the enemy, especially when it comes to vehicles equipped with an automatic transmission. The Allison gearbox mated with your 6.6L Duramax is no exception. With the high temperatures produced by an automatic transmission, … Continue reading Transmission Cooling to the duraMAX – 2001-2010 Chevy /GMC Duramax Transmission Cooler, Part 1 – Stock Review →

Read More 

Transmission Cooling to the duraMAX – 2001-2010 Chevy /GMC Duramax Transmission Cooler, Part 1 – Stock Review
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WARRANTY

Mishimoto Automotive (“Mishimoto”) warrants their products under this lifetime limited warranty policy (“Warranty Policy”). This Warranty Policy applies solely to: (i) Mishimoto Products purchased directly from Mishimoto or Mishimoto authorised dealers (each a “Mishimoto Product” and collectively, the “Mishimoto Products”) and (ii) the original purchaser of such Mishimoto Product (“Purchaser”). This Warranty Policy is non-transferable and all claims under this Warranty Policy must be accompanied by the original sales receipt. The terms and conditions of this Warranty Policy are subject to change by Mishimoto at any time without notice.

For our complete warranty policy, please click here.

Mishimoto Lifetime Warranty on ALL Products
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