Our B&M Hi-Tek SuperCoolers feature a stacked plate design which is up to 30% more efficient than tube and fin designs and have 15% less flow restriction resulting in maximum cooling efficiency. The cooler features built-in attachment points, making mounting the cooler a breeze and the cooler is suitable for many fluids including transmission fluids, engine oil, and power steering fluid. This large polished SuperCooler has a BTU rating of 20,500 BTU's. The hose fitting size for this cooler is 1/2-inch NPT and can be mounted with fittings located up, down or sideways. The SuperCooler features durable brazed aluminum construction and is pressure tested to 200 PSI. This cooler is recommended for high performance vehicles, street rods and full size trucks modified 4, 6 and V8 cylinder engines.