K&N 17-19 Chevrolet 2500/3500 V8-6.6L TD Charge PipeK&N charge pipe kits are made of free flowing, mandrel bent aluminum tubes designed to replace the restrictive factory intercooler piping on specific turbo charged vehicles and offer a wide range of performance customization options. K&N charge pipes have been engineered to reduce turbo charged air pressure loss as well as dramatically increase air flow from the turbo through the intercooler. The charge pipes are constructed from lightweight aluminum