Trans Cooler Max-Cool 4x11x3/4

The Trans Cooler Max-Cool 4x11x3/4 is a compact plate-and-fin automatic transmission fluid cooler engineered for vehicles that demand superior heat rejection during aggressive driving, towing, or high-performance operation. Built for mechanics and enthusiasts who recognize that factory transmission cooling is often inadequate—particularly in modified vehicles running elevated power levels or operating in demanding conditions—this aluminum cooler addresses the root cause of transmission degradation: excessive fluid temperature. Whether you're upgrading a street machine, preparing a tow vehicle, or maintaining longevity in a spirited daily driver, this cooler delivers the thermal management your transmission deserves.

The Trans Cooler Max-Cool features a proven plate-and-fin core design cast in aluminum with black paint for durability and corrosion resistance, maximizing surface area for efficient heat dissipation while maintaining a compact footprint of 11 x 4 x 0.75 inches. Dual 11/32-inch hose barb inlet and outlet ports allow straightforward integration into most automatic transmission cooler line circuits, with the included fitting, hardware, and hose components eliminating guesswork during installation. The aluminum construction keeps total weight at just 2.63 pounds, making it an ideal upgrade that adds minimal mass while substantially improving cooling capacity—a critical advantage for transmission fluid, which loses protective viscosity and anti-wear properties as temperatures climb above 200°F.

This cooler is ideal for automatic transmission applications where stock cooling falls short: performance builds increasing engine output, trucks and SUVs regularly towing heavy loads, vehicles operating in hot climates or stop-and-go traffic, and any platform where fluid temperature creeps into the danger zone. Installation is straightforward for experienced technicians—plumb the unit in series with existing cooler lines, secure it to the chassis or radiator support, and verify hose routing for clearance from engine heat sources and moving components. The compact dimensions ensure fitment in tight engine bays, and the included hardware simplifies the integration process, making this an essential upgrade for anyone serious about transmission longevity and consistent shift quality.