The PPE High-Flow Exhaust Manifold wiht Up-Pipes for your 2011-2016 6.6L Duramax inceases exhaust flow by 20% and are 50 state emissions legal. Designed to outlast your truck and are made from high-quality cast iron and the up pipes are made from stainless steel. Plus the aircraft grade Up-Pipe are high-flow, internally sleeved, and have an increased inner diameter.
- 2011-2016 GM 6.6L Duramax LML
- Significant Reduction in exhasut backpressure
- Free Flowing Stainless Steel Inner Bellows
- Stainless Steel 11-Gauge .120-inch Wall Diameter Up-Pipes
- Built In Bosses, Pre-Drilled and Tapped 1/8″ NPT For EGT Gauge
2015-2016 models minor modification to the upper shock mount is required for installation.