The factory transmission cooling on the 2004-2008 Ford F-150 is sized for stock duty, and fluid temperatures climb fast under the sustained load of towing and hauling. Heat is what wears a transmission out. The Mishimoto Transmission Cooler attacks the problem with raw capacity: a tube-and-fin core with a 174% increase in core volume over the factory Standard Cooling setup, giving the system far more headroom to keep fluid temperatures in a safe range when the truck is working hardest.----It doesn't just beat the base cooler - with a 32% increase in core volume over the F-150 Super Cooling option, it runs cooler than the heaviest-duty cooling Ford offered from the factory. A 286% increase in external fin area and 305% increase in internal fin area move heat from the fluid into the airstream far more efficiently, and all-aluminum construction handles the thermal demands of stock and modified F-150 trucks alike. The cooler retains the factory transmission line connections and includes new fittings plus a fitting removal tool for a clean, complete upgrade with no additional adapters or plumbing.----Direct fit for the 2004-2008 Ford F-150 4.6L and 5.4L V8. No drilling, cutting, or modification required. Backed by the Mishimoto Lifetime Warranty.

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