PPE OEM-Length Replacement High-Flow Up-Pipe Kit (2004.5-2005 GM 6.6L Duramax) - (116120405
Overview
The factory up-pipes on the 2004.5-2005 GM 6.6L Duramax are known for restrictive bends, corrosion, and bottlenecks that limit turbocharger efficiency. PPE's OEM-Length Replacement High-Flow Up-Pipe Kit upgrades these weak points with a smoother-flowing stainless steel design that increases exhaust capacity and improves overall engine performance.
High-Flow Stainless Steel Construction
Built from premium stainless steel, these up-pipes eliminate the narrow OEM choke points and tight bends that restrict exhaust flow. PPE's revised design increases the flow area by up to 46%, allowing exhaust gases to move more freely and reducing pumping losses under load.
Durable, Internally Sleeved Bellows
Each up-pipe features a three-layer, internally sleeved bellow for maximum durability and heat resistance. This construction helps maintain structural integrity during extreme temperature cycles, making the kit suitable for both stock and performance applications.
Direct Bolt-On Replacement
These up-pipes are designed to bolt directly to the OEM exhaust manifolds with no modifications required. PPE includes stainless steel gaskets to ensure a clean, leak-free installation.
Key Features
- Up to 46% larger flow area compared to stock
- High-flow design reduces restriction and improves turbo efficiency
- Premium stainless steel construction for long-term durability
- Three-layer internally sleeved bellows for superior strength
- Includes stainless steel up-pipe gaskets
- Direct bolt-on replacement for OEM up-pipes
- GTIN: 840171209419
- OEM Reference: GM 97303648
Performance Benefits
By removing the restrictive OEM bottleneck and improving exhaust flow, PPE's high-flow up-pipes help the turbocharger operate more efficiently. This results in smoother exhaust movement, reduced back-pressure, and improved overall engine responsiveness.
Application
- 2005 GMC Sierra 3500HD 6.6L V8 Turbo Diesel (Duramax)
- 2005 GMC Sierra 2500HD 6.6L V8 Turbo Diesel (Duramax)
- 2005 Chevrolet Silverado 3500HD 6.6L V8 Turbo Diesel (Duramax)
- 2005 Chevrolet Silverado 2500HD 6.6L V8 Turbo Diesel (Duramax)
- 2004 GMC Sierra 3500HD LLY 6.6L V8 Turbo Diesel (Duramax)
- 2004 GMC Sierra 2500HD LLY 6.6L V8 Turbo Diesel (Duramax)
- 2004 Chevrolet Silverado 3500HD LLY 6.6L V8 Turbo Diesel (Duramax)
- 2004 Chevrolet Silverado 2500HD LLY 6.6L V8 Turbo Diesel (Duramax)
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