Will it fit your vehicle?
This part is listed to suit:
- MakeCummins
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 Upgraded Transmission Cooler 3rd Gen Cummins
$995.85
Fluidyne transmission cooler kit to suit the Upgraded 3rd Gen Cummins. 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
Fluidyne High-Performance Transmission Cooler for 2003-2009 Dodge Ram 5.9L/6.7L Cummins (48RE & 68RFE)
When it comes to protecting your transmission, cooling is key. Excessive heat is one of the biggest transmission killers, especially for hard-working trucks that tow, haul, or put power to the pavement. That’s why Fluidyne High Performance’s Transmission Cooler is a must-have upgrade for your 2003-2009 Dodge Ram equipped with the 48RE or 68RFE.
Why Cooling Matters
Heat breaks down transmission fluid, leading to premature wear, slipping, and even catastrophic failure. The factory transmission cooler is barely adequate for stock applications—add a tuned truck, heavy trailer, or extreme conditions, and you’re pushing your transmission’s limits. Fluidyne’s upgraded cooler is engineered to combat heat effectively, keeping your transmission fluid at optimal temperatures for maximum reliability and longevity.
Key Features & Benefits
- Advanced Cooling Technology – Featuring a stacked plate design, this cooler offers three times the core area of traditional tube-and-fin coolers, allowing for superior heat dissipation. That means lower transmission temperatures, better performance, and increased transmission lifespan.
- Increased Fluid Capacity – With three times the fluid capacity of standard coolers, this system helps maintain stable operating temperatures under heavy loads, reducing the risk of overheating.
- No Thermostat, No Problems – Unlike some factory and aftermarket coolers, we do not include a thermostat. Why? Because thermostats can stick closed, preventing fluid from circulating and leading to overheating and potential transmission failure. By eliminating this weak point, Fluidyne’s cooler ensures unrestricted, consistent cooling.
- Built for Durability – Made from high-quality materials and tested in demanding conditions, this cooler is built to last—whether you’re towing cross-country, hitting the trails, or daily driving.
- Race-Proven Performance – Trusted in NASCAR and high-performance applications, Fluidyne cooling systems are engineered to withstand extreme conditions and deliver consistent results.
- Straightforward Installation – Designed for seamless integration with your 2003-2009 Ram 2500/3500, this cooler installs with minimal modifications, making it a hassle-free upgrade for any serious truck owner.
The Bottom Line
Whether you’re putting your truck to work or pushing its performance limits, heat management is critical. Fluidyne’s High-Performance Transmission Cooler is your best defense against excessive heat, helping you get the most out of your 48RE or 68RFE transmission.
Keep it cool. Keep it reliable. Upgrade today.
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 | 4.54 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
