Mishimoto MMBK-F2D-03BK Ford 6.0L Powerstroke Factory-Fit Boot Kit, 2003-2007, Black Direct fit for the 20032007 6.0L Powerstroke Five layers of 100% silicone for maximum durability and blowout prevention DuraCore technology provides resistance to heat, pressure, fuel, and oil Includes high-quality constant-tension T-bolt clamps Mishimoto Lifetime Warranty