PPE High-Flow Exhaust Manifold & Up-Pipe Kit - Silver Ceramic Coating (2017-2026 GM 6.6L Duramax) - (116112535
Overview
The factory exhaust manifold and up-pipe assembly on the 2017-2026 GM 6.6L Duramax can create unnecessary back-pressure and elevated EGTs. PPE's High-Flow Exhaust Manifold and Up-Pipe Kit with Silver Ceramic Coating replaces these restrictive components with a stronger, smoother-flowing system designed to improve turbo efficiency, reduce heat, and support higher performance demands.
High-Flow Manifold Construction
The manifold is cast from high-sil moly iron for exceptional durability and heat resistance. Its optimized internal geometry promotes better exhaust flow, helping lower EGTs and improving turbo spool-up. The added silver ceramic coating enhances thermal control, reduces surface temperatures, and provides long-term protection against corrosion and harsh environmental conditions.
Free-Flow Up-Pipe Design
The included up-pipes use two-inch free-flow tubing with internally sleeved bellows made from aircraft-grade 304 stainless steel. This design increases flow capacity, reduces turbulence, and maintains strength under high heat and high boost. The up-pipes are compatible with factory heat shields for a clean, OEM-style installation.
Performance & Reliability Benefits
Together, the manifold and up-pipe system is engineered to maximize exhaust flow, reduce thermal load, and improve overall engine efficiency. The ceramic coating further enhances heat management, resulting in quicker turbo response, lower EGTs, and more consistent performance whether towing, daily driving, or running performance upgrades.
Key Features
- Significant reduction in exhaust back-pressure
- Lower EGTs and improved turbo efficiency
- High-sil moly cast iron manifold with silver ceramic coating
- Two-inch free-flow up-pipes with internally sleeved bellows
- Up-pipes compatible with factory heat shields
- High-temp coated exhaust manifold gaskets included
- Upper and lower up-pipe gaskets included
- Includes manifold bolts, studs, and spacers
- Part Number: 116112535
- GTIN: 840171221503
Why Ceramic Coating Matters
Ceramic coating creates a thermal barrier that slows heat absorption and reduces surface temperatures. This improves flow efficiency, lowers EGTs even further, and protects the manifold from moisture, road salts, oil, fuel, and other corrosive elements. It also keeps the manifold looking clean and sharp for years.
Upgrade Path
Pair this kit with a PPE 3-inch 304 stainless steel downpipe for a complete high-flow exhaust solution. For maximum performance, combine with PPE's 304 stainless up-pipe kit and additional ceramic-coated components.
Application
- 2026 GMC Sierra 3500HD 6.6L V8 Turbo Diesel (Duramax)
- 2026 GMC Sierra 2500HD 6.6L V8 Turbo Diesel (Duramax)
- 2026 Chevrolet Silverado 3500HD 6.6L V8 Turbo Diesel (Duramax)
- 2026 Chevrolet Silverado 2500HD 6.6L V8 Turbo Diesel (Duramax)
- 2025 GMC Sierra 3500HD 6.6L V8 Turbo Diesel (Duramax)
- 2025 GMC Sierra 2500HD 6.6L V8 Turbo Diesel (Duramax)
- 2025 Chevrolet Silverado 3500HD 6.6L V8 Turbo Diesel (Duramax)
- 2025 Chevrolet Silverado 2500HD 6.6L V8 Turbo Diesel (Duramax)
- 2024 GMC Sierra 3500HD 6.6L V8 Turbo Diesel (Duramax)
- 2024 GMC Sierra 2500HD 6.6L V8 Turbo Diesel (Duramax)
- 2024 Chevrolet Silverado 3500HD 6.6L V8 Turbo Diesel (Duramax)
- 2024 Chevrolet Silverado 2500HD 6.6L V8 Turbo Diesel (Duramax)
- 2023 GMC Sierra 3500HD 6.6L V8 Turbo Diesel (Duramax)
- 2023 GMC Sierra 2500HD 6.6L V8 Turbo Diesel (Duramax)
- 2023 Chevrolet Silverado 3500HD 6.6L V8 Turbo Diesel (Duramax)
- 2023 Chevrolet Silverado 2500HD 6.6L V8 Turbo Diesel (Duramax)
- 2022 GMC Sierra 3500HD 6.6L V8 Turbo Diesel (Duramax)
- 2022 GMC Sierra 2500HD 6.6L V8 Turbo Diesel (Duramax)
- 2022 Chevrolet Silverado 3500HD 6.6L V8 Turbo Diesel (Duramax)
- 2022 Chevrolet Silverado 2500HD 6.6L V8 Turbo Diesel (Duramax)
- 2021 GMC Sierra 3500HD 6.6L V8 Turbo Diesel (Duramax)
- 2021 GMC Sierra 2500HD 6.6L V8 Turbo Diesel (Duramax)
- 2021 Chevrolet Silverado 3500HD 6.6L V8 Turbo Diesel (Duramax)
- 2021 Chevrolet Silverado 2500HD 6.6L V8 Turbo Diesel (Duramax)
- 2020 GMC Sierra 3500HD 6.6L V8 Turbo Diesel (Duramax)
- 2020 GMC Sierra 2500HD 6.6L V8 Turbo Diesel (Duramax)
- 2020 Chevrolet Silverado 3500HD 6.6L V8 Turbo Diesel (Duramax)
- 2020 Chevrolet Silverado 2500HD 6.6L V8 Turbo Diesel (Duramax)
- 2019 GMC Sierra 3500HD 6.6L V8 Turbo Diesel (Duramax)
- 2019 GMC Sierra 2500HD 6.6L V8 Turbo Diesel (Duramax)
- 2019 Chevrolet Silverado 3500HD 6.6L V8 Turbo Diesel (Duramax)
- 2019 Chevrolet Silverado 2500HD 6.6L V8 Turbo Diesel (Duramax)
- 2018 GMC Sierra 3500HD 6.6L V8 Turbo Diesel (Duramax)
- 2018 GMC Sierra 2500HD 6.6L V8 Turbo Diesel (Duramax)
- 2018 Chevrolet Silverado 3500HD 6.6L V8 Turbo Diesel (Duramax)
- 2018 Chevrolet Silverado 2500HD 6.6L V8 Turbo Diesel (Duramax)
- 2017 GMC Sierra 3500HD 6.6L V8 Turbo Diesel (Duramax)
- 2017 GMC Sierra 2500HD 6.6L V8 Turbo Diesel (Duramax)
- 2017 Chevrolet Silverado 3500HD 6.6L V8 Turbo Diesel (Duramax)
- 2017 Chevrolet Silverado 2500HD 6.6L V8 Turbo Diesel (Duramax)
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
