PPE 116111200 Exhaust Manifolds & Up-Pipes | 2002-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Features:

• Fits 2002–2004 6.6L Duramax diesel engines
• Cast high-sil moly high-flow exhaust manifolds
• Up-pipes made from 304 stainless steel
• Internally sleeved bellows improve durability
• Increased diameter enhances exhaust flow
• Reduces drive pressure and backpressure
• Lowers exhaust gas temperatures (EGTs)
• Improves turbo spool and throttle response
• Boosts torque and horsepower output
• Increases fuel efficiency and engine reliability
• Built to withstand high-heat performance conditions
• Direct bolt-on installation for easy upgrade

Unlock More Power With A Smoother Flow And Quicker Boost

If your 2002–2004 Duramax still runs on the stock exhaust setup, it’s time to upgrade with the PPE Exhaust Manifolds and Up-Pipes and feel the difference in every gear. This system is built to eliminate bottlenecks that hold your turbo back, giving you stronger throttle response, faster spool-up, and a noticeable bump in horsepower and torque. Whether you're hauling heavy loads or just want a more responsive ride, this bolt-on setup delivers consistent performance you can rely on. The cast high-sil moly manifolds and stainless steel up-pipes are engineered for serious heat and pressure, so you’re getting both durability and flow in one package. Plus, with improved fuel economy and lower exhaust gas temperatures, your engine works more efficiently under load. This is the kind of upgrade that pays off not just at the track, but every time you hit the highway or pull a trailer. If you're looking for more confidence and performance without getting into a full turbo swap, this kit brings the results.

Designed For Reliable Flow Under Extreme Load Conditions

The PPE 116111200 Exhaust Manifolds and Up-Pipes are specifically engineered for the 2002–2004 6.6L Duramax to overcome factory limitations in flow and heat management. The manifolds are constructed from cast high-sil moly material, selected for its ability to withstand prolonged exposure to high exhaust temperatures without warping or cracking. The up-pipes feature internally sleeved bellows and are built from 304 stainless steel, offering flexibility and long-term resistance to thermal expansion and vibration fatigue. With an increased internal diameter, the system significantly improves exhaust flow characteristics, reducing backpressure and lowering EGTs. This allows the turbocharger to spool more quickly, increasing both boost response and engine efficiency. These gains translate into better drivability, higher power output, and improved towing performance. Designed as a direct bolt-on replacement, the system fits seamlessly into the existing factory layout without requiring fabrication. It’s a proven solution for diesel owners looking to increase performance while maintaining reliability in real-world driving conditions.

Fits: 2002, 2003, 2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Notes:

• Designed specifically for 2002–2004 6.6L Duramax engines.
• Manifolds are made from cast high-sil moly for durability under extreme heat.
• Up-pipes are constructed from aircraft-grade 304 stainless steel.
• Internally sleeved bellows provide flexibility and reduce fatigue from thermal expansion.
• Increased internal diameter supports better exhaust flow and turbo performance.
• System helps reduce drive pressure and lower exhaust gas temperatures (EGTs).
• Improves turbo spool-up, throttle response, and fuel economy.
• Enhances power output and overall engine efficiency under load.
• Ideal for performance, towing, and long-term durability in high-stress applications.
• Direct bolt-on installation with no cutting or modifications required.