Trans Cooler Kit

The AFE POWER Trans Cooler Kit (SKU: AFE46-80008) is purpose-built to manage transmission fluid temperatures under demanding driving conditions. As a mechanic who regularly works on high-performance builds, I can tell you that transmission coolers are essential for any vehicle that sees towing, track use, or aggressive driving—situations where stock cooling capacity falls short. Elevated transmission fluid temperatures accelerate fluid breakdown, increase shift hesitation, reduce torque converter efficiency, and ultimately shorten transmission lifespan. This AFE kit addresses that vulnerability with a complete cooling solution designed to drop fluid temps by 30–50°F under sustained load.

AFE POWER's cooler design leverages a tube-and-fin core construction that maximizes surface area for heat rejection while maintaining low restriction. The kit includes all necessary mounting hardware, hoses, fittings, and adapters for a direct bolt-on installation, eliminating the need for custom fabrication. The cooler core is constructed from aluminum with integrated bypass valving to protect against excessive pressure during cold starts—a critical feature that prevents nuisance leaks and premature component failure. At 12.95 lbs and compact at 14 x 7 x 24 inches, the assembly fits in confined engine bays without requiring relocation of factory components.

This kit benefits owners of lifted trucks, performance trucks, vehicles used for trailer towing, and any enthusiast pushing their transmission harder than daily commuting demands. The cooler's low-pressure drop—typically under 5 PSI at normal flow rates—ensures minimal impact on transmission pump efficiency and won't interfere with factory electronic controls. Installation typically takes 2–4 hours and requires basic mechanical skill; the modular design allows users to route hoses to match their specific engine bay layout. Verify fitment against your exact year, make, and model before ordering, as transmission pan configurations and cooler line routing vary across platforms.