The Tundra Series Universal 25-Plate Transmission Oil Cooler keeps oil temperatures cool for optimum performance, and engine life. Featuring the more efficient stacked plate and fin design, these aluminum construction coolers are finished with the state-of-the-art PROFORM brazing process that protects from leaks and cracks and powdercoated with a black finish to withstands corrosion. Uniquely engineered louvered fins provide maximum cooling surface area, in a compact 2-inch thick, 11.5-inch wide footprint, while minimizing negative air flow resistance for some significant cooling potential! multiple mounting points on the flush mounting plates, make installation easily configurable to most setups. To ensure the quality that has come to be expected with PROFORM, the coolers are pressurized to 175PSI, and checked for deformities (complete failure is not reached until 600PSI), and further underwater tested at 80PSI, making sure no bubbles or mini-leaks are present.