Frame Rail Cooler12in (11/32in)

The DERALE Frame Rail Cooler 12in with 11/32in hose barb fittings is a compact transmission fluid cooler designed for vehicles where space constraints demand an efficient, low-profile cooling solution. Built with aluminum and copper construction and finished in black powder coat, this cooler measures 12.875 x 1.75 x 2.625 inches and weighs just 1.8 lbs, making it ideal for tight engine bay installations or auxiliary cooling applications on patrol vehicles, pursuit units, and high-demand duty rigs.

The tube-type design with 11/32-inch barb inlet and outlet connections accommodates standard transmission cooler hose and fittings, enabling straightforward integration into existing hydraulic or fluid circulation systems. The aluminum core with copper tubing maximizes heat dissipation while resisting corrosion in harsh field environments—critical for vehicles operating in salt spray, high humidity, or extreme temperature conditions. The black powder-coat finish protects against UV degradation and chemical exposure typical of law enforcement and military service vehicles.

This cooler is engineered for automatic transmission systems requiring supplemental cooling during sustained high-load operations—heavy towing, pursuit driving, or continuous duty cycles where factory cooling capacity falls short. Its compact 12-inch length positions it as an ideal secondary or frame-mounted cooler for vehicles where engine bay real estate is contested. Operators managing vehicles in hot climates or demanding patrol schedules will find the Frame Rail Cooler's modest weight and efficient construction particularly suited to extended operational reliability without adding substantial bulk or complexity to the cooling loop.