FLUIDYNE 3RD GEN CUMMINS EXTREME DUTY BAR PLATE COOLER

Extreme Duty Bar & Plate Transmission Cooler for 2003-2009 Dodge Ram 5.9L/6.7L Cummins (48RE & 68RFE)

When it comes to heavy-duty performance, heat is the enemy. Whether you’re towing at max capacity, hauling equipment daily, or putting serious power down in your 2003-2009 Dodge Ram 2500/3500 with the 48RE or 68RFE, the Extreme Duty Bar & Plate Transmission Cooler is engineered to keep transmission temperatures in check, ensuring maximum reliability and performance.

Engineered for Maximum Cooling

 • 4X the Fluid Capacity of Stock – This transmission cooler features a massive increase in core volume and fluid capacity, ensuring better heat dissipation and longer fluid life, especially under extreme conditions.

 • Bar & Plate Design for Superior Heat Rejection – Unlike traditional tube-and-fin or stacked plate designs, the bar & plate core offers exceptional cooling efficiency and durability, making it ideal for tow rigs, work trucks, and high-horsepower applications.

 • Dual-Pass Flow for Enhanced Cooling Efficiency – Unlike single-pass coolers, where fluid moves through the core once before exiting, this cooler features a dual-pass design, allowing transmission fluid to circulate through the cooling core twice before returning to the system. This extended exposure to cooling airflow drastically improves heat rejection and helps maintain stable transmission temperatures, even in the most demanding situations.

 • Proprietary Heat-Wicking Powder Coating – To further boost cooling performance, the exterior is treated with a heat-wicking powder coating, which helps pull heat away from the cooler, increasing efficiency and reducing overall transmission temperatures.

 • Aerospace-Grade Aluminum Construction – Built from premium aerospace-grade aluminum, this cooler is designed to withstand extreme temperatures and harsh conditions without failure.

Built for Durability & Performance

 • Internally & Externally TIG Welded – Unlike mass-produced, crimped-together coolers that fail under pressure, this unit is fully TIG welded inside and out for maximum durability and leak resistance.

 • Handles the Toughest Environments – Whether you’re battling long, steep grades with a heavy trailer or pushing high torque and horsepower, this cooler is engineered to maintain consistent, safe operating temperatures.

 • Designed for Work & Play – If your truck is a tow rig, off-road beast, or high-horsepower street truck, this cooler ensures your transmission stays protected and performing at its best.

 • Easy Installation – Built for seamless integration into your 2003-2009 Ram 2500/3500, with minimal modifications required.

The Bottom Line

Heat kills transmissions. The Extreme Duty Bar & Plate Transmission Cooler is the ultimate solution for keeping your 48RE or 68RFE running cool, even in the most demanding conditions. With 4X the fluid capacity, aerospace-grade materials, TIG-welded construction, a dual-pass flow design, and a proprietary heat-wicking powder coating, this cooler is built to outlast and outperform anything on the market.

Cooler temps. Longer transmission life. Maximum reliability. Upgrade today.