Description: 100% Brand new,never been used 3" Hot & Cold Side Outflows Stock Tubes By 15% Works With aFe & OEM Intercooler Polished Finish Stainless Steel Intercooler Pipe Professional installation in highly recommended(No instruction included) Fitment: 2011-2016 Chevrolet Silverado 2500HD/3500HD 6.6L Duramax Diesel 2011-2016 GMC Sierra 2500HD/3500HD 6.6L Duramax Diesel Package Includes: 3X Intercooler Pipes 5x Silicone Boots 9x T-bolt Clamps As the pictures show .