PPE High-Flow Exhaust Manifold & Up-Pipe Kit - Silver Ceramic Coating (2001-2004 GM 6.6L Duramax FED / 2001 CA) - (116111035
Overview
The factory exhaust manifold and up-pipe assembly on the 2001-2004 GM 6.6L Duramax (Federal emissions models and 2001 California) is known for creating 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, higher-flowing system designed to improve turbo response, reduce heat, and support increased performance demands.
High-Flow Manifold Construction
The manifold is cast from high-sil moly iron for excellent durability and heat resistance. Its optimized internal geometry promotes smoother 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, chemicals, and harsh environmental conditions.
Free-Flow Up-Pipe Design
The included up-pipes feature free-flowing stainless steel inner liner bellows and are constructed from 11-gauge (.120-inch wall) stainless steel with a 2-inch outside diameter. Internally sleeved bellows made from aircraft-grade 304 stainless steel increase durability and flow capacity under high heat and high boost conditions.
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 spool, lower EGTs, and more consistent performance whether towing, daily driving, or running performance upgrades.
Key Features
- Significant reduction in exhaust back-pressure
- High-sil moly cast iron manifold with silver ceramic coating
- Free-flow stainless steel inner liner bellows
- 11-gauge stainless steel up-pipes with 2" OD
- Built-in bosses pre-drilled and tapped 1/8" NPT for EGT sensors
- High-temp coated exhaust manifold gaskets included
- Upper and lower up-pipe gaskets included
- Includes manifold bolts, studs, and spacers
- GTIN: 840171221626
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.
Installation Note
This kit requires a PPE LB7 downpipe. The factory downpipe is not compatible. For a complete upgrade, pair this system with PPE's 3-inch 304 stainless steel downpipe.
Application
- 2004 GMC Sierra 3500HD 6.6L V8 Turbo Diesel (Duramax)
- 2004 GMC Sierra 2500HD 6.6L V8 Turbo Diesel (Duramax)
- 2004 Chevrolet Silverado 3500HD 6.6L V8 Turbo Diesel (Duramax)
- 2004 Chevrolet Silverado 2500HD 6.6L V8 Turbo Diesel (Duramax)
- 2003 GMC Sierra 3500HD 6.6L V8 Turbo Diesel (Duramax)
- 2003 GMC Sierra 2500HD 6.6L V8 Turbo Diesel (Duramax)
- 2003 Chevrolet Silverado 3500HD 6.6L V8 Turbo Diesel (Duramax)
- 2003 Chevrolet Silverado 2500HD 6.6L V8 Turbo Diesel (Duramax)
- 2002 GMC Sierra 3500HD 6.6L V8 Turbo Diesel (Duramax)
- 2002 GMC Sierra 2500HD 6.6L V8 Turbo Diesel (Duramax)
- 2002 Chevrolet Silverado 3500HD 6.6L V8 Turbo Diesel (Duramax)
- 2002 Chevrolet Silverado 2500HD 6.6L V8 Turbo Diesel (Duramax)
- 2001 GMC Sierra 3500HD 6.6L V8 Turbo Diesel (Duramax)
- 2001 GMC Sierra 2500HD 6.6L V8 Turbo Diesel (Duramax)
- 2001 Chevrolet Silverado 3500HD 6.6L V8 Turbo Diesel (Duramax)
- 2001 Chevrolet Silverado 2500HD 6.6L V8 Turbo Diesel (Duramax)
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
