The PPE 116111100 High-Flow Race Exhaust Manifolds with Up-Pipes for your 2001-2004 GM 6.6L Duramax are designed to maximize power and flow characteristics in your truck. Featuring durable, high flow Up-Pipe bellows that are internally sleeved and aircraft grade with an increased inner diameter which all together increases flow by over 20%. The entire Manifold and Up-Pipe exhaust system is designed to lower exhaust gas temperatures, reduce drive pressure, and accelerate turbo spoolup while maintaining reliability.
FEATURES:
Round pipe for twin turbo applications
Cast hi-sil moly iron high flow manifold construction
Significant reduction in exhaust back pressures
Free flowing Stainless Steel Inner Liner Bellows
Stainless Steel 11-gauge .120-inch wall diameter Up-Pipes
Built in bosses, pre-drilled and tapped 1/8" NPT for EGT gauge sensor
Application Notes:
Only fits NON-EGR off-road applications.
These race manifolds are designed for closed course racing vehicles and are not to be used on the street.
