Frame Rail Cooler 24in Long an-6 Inlets

The Frame Rail Cooler 24in Long AN-6 Inlets by DERALE is an essential cooling component for vehicles running custom fluid systems, turbochargers, superchargers, or high-performance transmissions. This transmission cooler and fluid conditioner mounts directly to frame rails, offering space-efficient integration without sacrificing cooling capacity. Whether you're building a street rod, restoring a classic, or tuning a modern performance vehicle, this cooler addresses heat management when stock systems fall short—critical for reliability during sustained driving, track use, or towing applications.

At 24 inches long with dual AN-6 inlet ports, this frame rail cooler delivers efficient heat rejection through a compact profile that fits tight engine bays and chassis layouts. The AN-6 connection standard (3/8-inch JIC fittings) accepts braided stainless steel lines and adapts to virtually any aftermarket fluid circuit—transmission, differential, supercharger intercooler, or power steering systems. The aluminum core construction resists corrosion and maximizes surface area for convective cooling, while the slim 2.9-inch width allows mounting along frame rails without interference with suspension, exhaust, or driveline components. Weighing just 1.48 lbs, it adds negligible mass while substantially reducing fluid temperatures under load.

Frame rail mounting suits hot rod builders, drift enthusiasts, and tuners who demand hidden or integrated cooler placement. The dual AN-6 configuration accommodates custom plumbing layouts, allowing you to branch circuits or run series flow as needed. Installation requires basic line routing and secure frame attachment; most vehicles benefit from a small electric fan or ensuring adequate airflow across the core during street and track use. This cooler works on vehicles spanning vintage American muscle to modern imports—anywhere fluid temperature control determines performance longevity.