Dual-Pass Heat Sink Cooler 15in

The Dual-Pass Heat Sink Cooler 15in from DERALE is an indispensable transmission cooling solution for street, strip, and tow vehicles operating in high-load conditions. Whether you're upgrading a modified truck pulling heavy loads, a performance car generating excess transmission heat, or a daily driver facing summer traffic jams, this aluminum-core cooler addresses one of the most overlooked failure points in modern powertrains. Transmission fluid that exceeds 220°F begins breaking down, causing seal degradation, shift lag, and catastrophic failure—especially under boost or extended load cycles.

The dual-pass design forces transmission fluid through the heat sink core twice per circulation cycle, maximizing thermal transfer efficiency compared to single-pass designs. DERALE's 15-inch cooler delivers substantial cooling capacity while maintaining a compact footprint suitable for tight engine bay installations common on modern vehicles. The robust aluminum core and welded tank construction resist vibration and impact damage, while the dual-pass tube configuration reduces flow restriction—critical when retrofitting into stock radiator support brackets or aftermarket cooler mounting locations. The 2.5 lb lightweight design minimizes installation burden without sacrificing durability.

This cooler is ideal for owners upgrading automatic transmissions in supercharged engines, turbo platforms, or any build requiring upgraded cooling beyond factory specifications. Installation connects between the transmission cooler lines using standard -6 AN fittings, making integration straightforward in most retrofit scenarios. The 4.6 x 4.6 inch cross-section fits alongside radiators or mounts in custom locations, offering flexibility for custom chassis builds and engine swaps. Proper line routing away from exhaust components ensures longevity and maximum cooling performance during sustained operation.