Intercooler Pipe Boot Kit Fit For 2002-2004 GM 6.6L MT020015 39407360Description Material: Aluminum Diameter: 3" Finish: Polished Placement on Vehicle: Engine Compartment The kit features polished aluminum cold side and hot side piping accompanied by silicone boots. The 6. 6L Duramax intercooler piping is engineered to eliminate restrictive bends present in the factory pipes. This results in improved airflow, more power, and lower EGTs that will support your Duramax at any power level. To add even more reliability this