PPE 116111600 Exhaust Manifolds & Up-Pipes | 2006-2007 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LBZ

Features: - Fits 2006–2007 6.6L Duramax LBZ engines - High-sil moly cast high-flow exhaust manifolds - Internally sleeved 304 stainless steel up-pipes - Increased internal diameter for better exhaust flow - Improves turbo spool-up and throttle response - Reduces drive pressure and backpressure - Lowers exhaust gas temperatures (EGTs) - Boosts horsepower and torque output - Enhances fuel economy and engine efficiency - Resists warping and cracking under high heat - Ideal for towing and performance builds - Direct bolt-on upgrade with no fabrication needed Let Your Duramax Run Stronger Cooler And More Efficiently When you want to pull more power from your 2006–2007 Duramax LBZ without diving into a full turbo upgrade, the PPE Exhaust Manifolds and Up-Pipes kit is the perfect bolt-on solution. This setup is built to eliminate one of the most overlooked bottlenecks in your engine’s performance by replacing the restrictive factory manifolds and pipes with components that actually let your turbo breathe. You’ll notice improved throttle response, quicker spool-up, and a nice bump in torque when you put your foot down. Whether you’re towing a trailer through the mountains or just want more responsiveness in your daily driving, this system is designed to perform. The cast high-sil moly manifolds and aircraft-grade stainless steel up-pipes are built to last, even under extreme heat and pressure. And since it’s a direct bolt-on kit, you get these gains without a ton of labor or custom fabrication. If you're looking for a clean, dependable way to upgrade performance and efficiency, this is a smart move for your LBZ. Precision Flow Engineering Built For Heat And Boost Control The PPE 116111600 Exhaust Manifolds and Up-Pipes system for the 2006–2007 Duramax LBZ is designed to enhance exhaust flow dynamics and withstand the demands of high-performance diesel operation. The manifolds are cast from high-silicon molybdenum material, which delivers exceptional durability and resistance to cracking or warping under prolonged high-temperature conditions. Paired with internally sleeved 304 stainless steel up-pipes, the system improves flow efficiency by increasing internal diameter and maintaining consistent volume through expansion joints. This reduction in drive pressure lowers exhaust gas temperatures and enhances turbocharger performance by promoting faster spool and more stable boost response. As a result, you gain measurable improvements in horsepower, torque, and fuel efficiency. The system is also a direct-fit replacement, requiring no additional fabrication, making installation as straightforward as the performance gains it delivers. Designed for serious towing and demanding daily driving, this PPE setup brings reliability and performance together in one well-engineered package. Fits: 2006, 2007 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LBZ Notes: - Specifically designed for 2006–2007 6.6L Duramax LBZ engines. - Manifolds are cast from high-sil moly for superior heat resistance and durability. - Up-pipes are built from aircraft-grade 304 stainless steel for long-term reliability. - Internally sleeved bellows minimize fatigue from thermal cycling. - Increased internal diameter supports improved exhaust flow to the turbo. - Helps lower drive pressure and reduce exhaust gas temperatures (EGTs). - Boosts turbo spool-up speed and throttle response under load. - Improves power, torque, and fuel economy for performance and towing. - Direct bolt-on installation with no fabrication required. - Ideal for stock or modified engines seeking improved exhaust efficiency.