Mishimoto silicone coolant hose kits are constructed from a combination of high-grade silicone and four layers of heat-resistant fibers to provide superior durability and increased pressure tolerance.Mishimoto is proud to release a silicone coolant hose kit specifically for the 2001-2005 6.6L Duramax.The Mishimoto silicone hose kit is engineered to retain flawless factory fitment and provide years of reliable service.A cooling system is only as strong as its weakest link; old rubber hoses are prone to failure from years of abuse.Upgrade your Duramax with Mishimoto silicone coolant hoses for the ultimate in performance and style.The Mishimoto coolant hose kit is protected by our lifetime warranty and is offered in black, blue, and red. Silicone Coolant Kit, fits Chevrolet/GMC 6.6L Duramax 2001-2005 2004-2005 Chevrolet Silverado 2500 HD 6.6 Liter 1000, 2001-2003 Chevrolet Silverado 2500 HD 6.6 Liter 1000/M74, 2001-2005 Chevrolet Silverado 2500 HD 6.6 Liter 4L80-E, 2002 Chevrolet Silverado 2500 HD 6.6 Liter 4L80-E-HD/MN8, 2004-2005 Chevrolet Silverado 2500 HD 6.6 Liter NV4500, 2001-2003 Chevrolet Silverado 2500 HD 6.6 Liter NV4500/MW3, 2004-2005 Chevrolet Silverado 2500 HD 6.6 Liter S6-650, 2001-2003 Chevrolet Silverado 2500 HD 6.6 Liter S6-650/ML6, 2004-2005 Chevrolet Silverado 3500 6.6 Liter 1000, 2001-2003 Chevrolet Silverado 3500 6.6 Liter 1000/M74, 2001-2005 Chevrolet Silverado 3500 6.6 Liter 4L80-E, 2004-2005 Chevrolet Silverado 3500 6.6 Liter NV4500, 2001-2003 Chevrolet Silverado 3500 6.6 Liter NV4500/MW3, 2004-2005 Chevrolet Silverado 3500 6.6 Liter S6-650, 2001-2003 Chevrolet Silverado 3500 6.6 Liter S6-650/ML6, 2004-2005 GMC Sierra 2500 HD 6.6 Liter 1000, 2004-2005 GMC Sierra 2500 HD 6.6 Liter 1000, 2001-2003 GMC Sierra 2500 HD 6.6 Liter 1000/M74, 2001-2005 GMC Sierra 2500 HD 6.6 Liter 4L80-E, 2001-2005 GMC Sierra 2500 HD 6.6 Liter 4L80-E, 2002 GMC Sierra 2500 HD 6.6 Liter 4L80-E-HD/MN8, 2004-2005 GMC Sierra 2500 HD 6.6 Liter NV4500, 2004-2005 GMC Sierra 2500 HD 6.6 Liter NV4500, 2001-2003 GMC Sierra 2500 HD 6.6 Liter NV4500/MW3, 2004-2005 GMC Sierra 2500 HD 6.6 Liter S6-650, 2004-2005 GMC Sierra 2500 HD 6.6 Liter S6-650, 2001-2003 GMC Sierra 2500 HD 6.6 Liter S6-650/ML6, 2004-2005 GMC Sierra 3500 6.6 Liter 1000, 2004-2005 GMC Sierra 3500 6.6 Liter 1000, 2001-2003 GMC Sierra 3500 6.6 Liter 1000/M74, 2001-2005 GMC Sierra 3500 6.6 Liter 4L80-E, 2001-2005 GMC Sierra 3500 6.6 Liter 4L80-E, 2004-2005 GMC Sierra 3500 6.6 Liter NV4500, 2004-2005 GMC Sierra 3500 6.6 Liter NV4500, 2001-2003 GMC Sierra 3500 6.6 Liter NV4500/MW3, 2004-2005 GMC Sierra 3500 6.6 Liter S6-650, 2004-2005 GMC Sierra 3500 6.6 Liter S6-650, 2001-2003 GMC Sierra 3500 6.6 Liter S6-650/ML6