Tube & Fin Cooler -6AN

The DERALE Tube & Fin Cooler -6AN (MPN 13318) is a compact aluminum and copper fluid cooler engineered for serious transmission cooling in performance and modified vehicles. Built for mechanics and automotive enthusiasts who demand reliable thermal management, this cooler addresses one of the most critical performance variables: fluid temperature control. Whether you're running an automatic transmission under sustained load, towing heavy payloads, or pushing your vehicle's engine modifications to their limits, elevated fluid temperatures degrade viscosity, reduce shift quality, and accelerate wear on internal components. The Tube & Fin Cooler -6AN provides the cooling capacity needed to keep transmission fluid within optimal operating ranges and extend component lifespan.

This cooler features a tube-and-fin core design that maximizes surface area for efficient heat dissipation while maintaining a compact footprint of 17.55 x 1.05 x 23.9 inches—ideal for vehicles with tight engine bay layouts. The aluminum and copper construction delivers superior thermal conductivity compared to single-material alternatives, while the durable black powder coat finish resists corrosion and UV degradation in harsh underhood environments. The -6AN male inlet and outlet ports accept standard AN hose fittings, simplifying integration into existing cooling circuits without custom fabrication. At 2.78 lbs, the cooler's lightweight design minimizes added weight while its robust construction handles the pressure and flow demands of modern automatic transmissions.

Mechanics installing transmission coolers on modified vehicles, high-output engine builds, or vehicles experiencing chronic overheating will find the DERALE tube and fin cooler straightforward to mount and plumb. The -6AN connection size is industry-standard for mid-range cooling applications, making replacement hose sections and fittings readily available. This cooler excels in street performance vehicles, street-strip cars, and trucks running enhanced power levels where stock cooling proves insufficient. Proper installation requires routing fluid lines to and from the transmission cooler circuit, with the cooler positioned to receive adequate airflow—typically mounted in front of or beside the radiator. Verify your vehicle's transmission cooling line compatibility and available mounting space before purchase.