AFCO '99-'04 Pro Series Ford Lightning Harley Davidson F-150 Truck double pass aluminum heat exchanger . It's a very easy installation and a great way to maximize the efficiency of the supercharger air charge. It is 26 3/8" W x 8.9" tall overall. The kit includes all the hardware needed instructions. High Duty Cycle avoids heat soak, keeps the intake charge cool far longer than the stock unit.