Banks Power 06-10 Chevy 6.6L (All) Techni-Cooler SystemEverything about Techni Cooler is bigger, including the core area, which has 25% more flow volume. Increases air density for more continuous power. The Banks engineers carefully examined the stock Duramax intercooler, and then upgraded everything for superior results: Stock has one plastic end tank. Techni Cooler provides two durable, all aluminum end tanks, which will never melt or burst under high boost conditions. Large, streamlined end tanks