Replace the intercooler and pipe boots on your 2001-2004 Chevy/GMC 6.6L LB7 Duramax with the Direct-Fit Hoses & Clamps. The factory boots in your intercooler and intake system are often made of inferior materials that degrade over time due to heat, oil, and other underhood conditions. A torn boot or failed clamp can cause boost leaks that can rob you of power. Direct-fit hose and clamp kits are designed to it under the hood of your truck and insall directly in place of the existing factory components. Many aftermarket boot kits feature a durable silicone construction for added durability and long term strength. You�ll find high-quality manufacturers like AFE, BD-Power, and Mishimoto.