Wehrli 100119 3 inch Down-Pipe | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

2001-2004 GM 6.6L Duramax 2500HD / 3500HD Wehrli 3" Down-Pipe Features: - 3" down-pipe - Heat wrapped - High-temperature coating - Bolt-on upgrade - No tuning required The 2001-2004 GM 6.6L Duramax 2500HD / 3500HD Wehrli 3" Down-Pipe Offers More Efficient Airflow To ensure you are squeezing all of the power and performance gains out of your 2001-2004 GM 6.6L Duramax 2500HD / 3500HD, you are going to want to replace your weak factory turbocharger down-pipe with the 2001-2004 GM 6.6L Duramax 2500HD / 3500HD Wehrli 3" Down-Pipe. It immediately makes airflow more efficient by being less restrictive to let you unlock every last bit of horsepower and torque from your 6.6L diesel engine. Installation of this down-pipe makes this a must have for your build. It is a simple bolt-on installation that requires no additional tuning modifications. Fitment: 2001, 2002, 2003, 2004 GM 6.6L Duramax 2500HD / 3500HD