High Flow 3" Hot & Cold Side Intercooler Tubes for 2011-16 LML 6.6l Duramax engines in Chevy or GMC applications. Cold Side Features:3" Design Optimizes Airflow4x1/8" NPT Bungs for injections or pressure gauge Routes over the alternator, providing room for twin turbosSuperior powder coat finishNote: Air Intake Resonator must be deleted for fitment.Hot Side Features:Replaces the small OEM Intercooler Tube which routes from the turbo to the intercooler on the drivers side.Seamless constructionCNC Mandrel BentSmooth Sweeping BendsReduces Hot Side RestrictionsSuperior powder coat finishIncludes1. Hot Side Intercooler Tube1. Cold Side Upper Intake Tube1. Cold Side Lower Intake Tube2. Hot Side Couplers w/ Clamps 2. Cold Side Couplers w/ Clamps4. 1/8" NPT Plugs Fits: 6.6l LML 2011-2016 Duramax Engines