2008-2010 Powerstroke 6.4L Heavy Duty - Thick Wall Up PipesHeavy Duty Thick Wall Up Pipes 6. 4L Powerstroke (20082010) Built for 6. 4L Powerstroke owners who rely on their trucks daily, these heavy duty up pipes are engineered to outlast factory components and withstand the extreme heat and pressure that come with towing, hard driving, and performance use. Factory up pipes are known to fatigue and fail over time especially under higher exhaust temperatures. These upgraded pipes address that issue with