Will it fit your vehicle?
This part is listed to suit:
- MakeChev / GMC
- ModelSilverado
Fitment listings are a guide. For a guaranteed match, send us your rego or VIN and our team will confirm the exact part before you pay.
Fluidyne Heavy Duty Transmission Cooler – 20-24 L5P Duramax
$995.85
Fluidyne transmission cooler kit to suit the Heavy Duty – 20-24 L5P 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
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Willys Workshop · Oxley & Warana, QLD
Easy returns within 14 days
12 Month Warranty
Tuning & Fitment Available
Fast AU-Wide Shipping
Easy returns within 14 days
12 month warranty
Description
Excessive heat is a major factor in transmission failure, leading to a shortened lifespan and costly repairs. Unfortunately, OEM transmission coolers often lack the efficiency needed to manage heat effectively, especially under heavy use. To safeguard your transmission and prolong its life, upgrading to a more advanced cooling system is essential.
The Fluidyne High Performance Bar and Plate Transmission Fluid Cooler, designed specifically for the 2020-2024 GM 6.6L L5P Duramax, offers a significant upgrade with four times the heat dissipation capacity of factory models. This ensures your transmission stays cooler and operates more efficiently, even in the most demanding conditions.
Featuring the densest fin count per inch available on the market, the Fluidyne cooler delivers superior cooling performance. Its fully welded internal splitter plates prevent cross-contamination between hot and cold fluid streams, maintaining the effectiveness and purity of your transmission fluid. Constructed from aerospace-grade aluminum with a bar and plate design, this cooler maximizes heat exchange while minimizing pressure drop.
Designed for direct bolt-in replacement, the cooler uses your existing factory mounts for a hassle-free installation. It’s finished with a proprietary heat-wicking powder coat that further enhances thermal efficiency. Backed by a limited lifetime warranty, the Fluidyne High Performance Cooler ensures reliable, long-lasting performance for your 2020-2024 L5P Duramax.
Key Features:
- Over 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 with bar and plate construction for optimal durability
- Proprietary fin design for enhanced thermal performance
- Powder-coated with a specialized heat-wicking compound
- Limited lifetime warranty for peace of mind
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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 |
| Make | Chev / GMC |
| Model | Silverado |
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
