Blue 2001-2004 Chevrolet Silverado / GMC Sierra 2500HD 3500 6.6 6.6L Duramax Turbo Diesel Heatshield AIR Intake KIT Systems FIT - 2001-2004 CHEVY SILVERADO 2500HD, 3500 6.6L V8 TURBO DIESEL FIT - 2001-2004 GMC SIERRA 2500HD, 3500 6.6L V8 TURBO DIESEL Washable and Reuseable High Performance Dry-flow air filter No additional parts will be needed for installation after you purchase this kit This air intake kit will increase 7-10% of Horsepower and 5-8% of Torque