Mishimoto is proud to release a direct-fIt'silicone boot kit with DuraCore technology designed specifically for the 6.6L Chevrolet/GMC Duramax.Mishimoto DuraCore technology is the synthetic material that comprises the innermost layer of all Mishimoto silicone diesel boots.Compared to normal silicone, DuraCore provides superior resistance to heat, pressure, fuel, and oil.This effectively increases the life of our boots by preventing leaks and blowouts.To add even more reliability this kit includes Mishimoto constant-tension T-bolt clamps for accurate and consistent holding power.As with all our products, this boot kit is protected by the Mishimoto lifetime warranty. Factory-Fit Boot Kit, fits Chevrolet/GMC 6.6L Duramax 2006-2010 2006-2010 Chevrolet Silverado 2500 HD 6.6 Liter 1000, 2006-2007 Chevrolet Silverado 2500 HD 6.6 Liter 4L80-E, 2007-2010 Chevrolet Silverado 2500 HD 6.6 Liter 6L90, 2006-2007 Chevrolet Silverado 2500 HD 6.6 Liter NV4500, 2006 Chevrolet Silverado 2500 HD 6.6 Liter S6-650, 2006-2007 Chevrolet Silverado 3500 6.6 Liter 1000, 2006-2007 Chevrolet Silverado 3500 6.6 Liter 4L80-E, 2006-2007 Chevrolet Silverado 3500 6.6 Liter NV4500, 2006 Chevrolet Silverado 3500 6.6 Liter S6-650, 2007-2010 Chevrolet Silverado 3500 HD 6.6 Liter 1000, 2007-2010 Chevrolet Silverado 3500 HD 6.6 Liter 6L90, 2006-2010 GMC Sierra 2500 HD 6.6 Liter 1000, 2006-2007 GMC Sierra 2500 HD 6.6 Liter 4L80-E, 2007-2010 GMC Sierra 2500 HD 6.6 Liter 6L90, 2006-2007 GMC Sierra 2500 HD 6.6 Liter NV4500, 2006 GMC Sierra 2500 HD 6.6 Liter S6-650, 2006-2007 GMC Sierra 3500 6.6 Liter 1000, 2006-2007 GMC Sierra 3500 6.6 Liter 4L80-E, 2006-2007 GMC Sierra 3500 6.6 Liter NV4500, 2006 GMC Sierra 3500 6.6 Liter S6-650, 2007-2010 GMC Sierra 3500 HD 6.6 Liter 1000, 2007-2010 GMC Sierra 3500 HD 6.6 Liter 6L90