The PPE 116111101 High-Flow Race Exhaust Manifolds with Up-Pipes for your 2001-2016 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.
2007.5-2010 LMM Models require 116111810 LMM Modified Coolant Tube (see related items)
On 2015-2016 models, the passenger upper control arm has a heat shield. This heat shield will need to be modified and re-positioned to gain clearance for installation.