Fluidyne Heavy Duty Transmission Cooler – 11-14 LMM/LML Duramax

$993.05

Fluidyne transmission cooler kit to suit the Heavy Duty – 11-14 LMM / LML Duramax. Drops ATF temperatures to protect your automatic under towing and heavy loads. Imported to order and backed by the team at Willys Workshop.

Imported to order — through our workshopWe bring this in from our supplier and receive it at our workshop first. From there we can build, tune or fit it for you — or ship it straight to you or your mechanic. Freight and any workshop work are quoted on enquiry.

Available to order

SKU: RT-A1-1114 Categories: , Brand:
Easy returns within 14 days
12 Month Warranty
Tuning & Fitment Available

Free Shipping

Easy returns within 14 days

12 month warranty

Description

Excessive heat is a major threat to your transmission’s longevity, leading to premature wear, reduced performance, and costly repairs. OEM transmission coolers often struggle to provide adequate heat dissipation, especially under demanding conditions, which can leave your transmission vulnerable. Upgrading to a more efficient cooling solution is essential to protect your transmission and enhance its durability.

The Fluidyne High Performance Bar and Plate Transmission Fluid Cooler is designed specifically for the 2011-2014 GM 6.6L Duramax, offering a significant upgrade over stock coolers. With four times the heat dissipation capacity of factory models, this cooler ensures that your transmission runs cooler and more efficiently, even in the most demanding situations.

Engineered with the densest fins per inch on the market, the Fluidyne cooler delivers exceptional cooling performance. Its fully welded internal splitter plates prevent contamination between hot and cold fluids, maintaining the integrity and effectiveness of your transmission fluid. Constructed from aerospace-grade aluminum with bar and plate technology, this cooler provides maximum heat exchange with minimal pressure drop.

Designed as a direct bolt-in replacement, the Fluidyne cooler uses your existing factory mounts for a straightforward installation. Finished with a proprietary heat-wicking powder coat, it further enhances thermal efficiency. Backed by a limited lifetime warranty, the Fluidyne High Performance Cooler ensures long-lasting reliability and superior performance for your vehicle.

Key Features:

  • Four times the heat dissipation capacity compared to stock coolers
  • Direct bolt-in replacement for easy installation
  • Maximum fin density for superior cooling
  • Fully welded internal splitter plates to prevent fluid contamination
  • Tested up to 250 PSI against leaks and ensure optimal performance.
  • Aerospace-grade aluminum construction with bar and plate design
  • Proprietary fin design for enhanced thermal performance
  • Powder-coated with a specialized heat-wicking compound
  • Limited lifetime warranty for added peace of mind

INTRODUCTION TO FLUIDYNE EXTREME DUTY BAR PLATE TRANSMISSION COOLERS – YouTube

Tap to unmute

INTRODUCTION TO FLUIDYNE EXTREME DUTY BAR PLATE TRANSMISSION COOLERS Randy's Transmissions

Randy's Transmissions22.3K subscribers

Watch on

Imported to Order — Through Our Workshop

  • Brought in from our supplier and received at our Sunshine Coast workshop first.
  • From there we can build, tune or fit it for you, or ship it on to you or your mechanic.
  • Freight and any workshop work are quoted on enquiry — international freight, customs and delivery vary by item and destination.
  • Typical lead time is confirmed at the time of order.

Get a freight + build quote: call (07) 5619 7869 or email sales@willysworkshop.com.au.

Additional information

Weight 8.16 kg
Dimensions 50 × 40 × 20 cm

Randy's Transmissions — Limited Warranty

Randy's Transmissions warrants all reman transmissions, torque converters and serviced components per the published Randy's Limited Warranty:

  • 12 months / unlimited km on reman transmissions (street use)
  • Lifetime on Randy's hard parts (gears, shafts) where stated
  • Claims processed via Randy's Warranty Claims & Support form
  • Original proof of purchase required
  • Competition / off-road use excluded unless specifically stated

Fitment by Willys Workshop can be arranged in-house at our Oxley or Warana locations — workshop fitment receipts count toward warranty claim documentation.

Read the full Randy's Transmissions warranty terms →


Warranty claims are coordinated through Willys Workshop. Email sales@willysworkshop.com.au or call Warana (07) 5619 7869 / Oxley (07) 3377 3421 with your order number and a description of the issue.

Questions, or need a fitment check?
Send your rego or VIN and our Australian-based team will manually confirm fitment before you buy.
Prefer to text your rego/VIN? 0485 885 957