The PPE 116111101 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 spool-up while maintaining reliability.
Fits 2001-2004 LB7 with Federal Emissions Only
CARB E.O. number D-701-19 for Single Turbo Version
Compound turbo version not available for sale in California