Product Description
Improve exhaust flow and turbo efficiency with the WEHRLI CUSTOM FAB WCF100654 2IN STAINLESS PASSENGER SIDE UP PIPE for the 2001-2004 LB7 Duramax platform. Designed specifically for single turbo applications, this high-quality stainless steel up pipe replaces the restrictive factory passenger side pipe and delivers improved durability and exhaust flow for performance builds.
The factory LB7 exhaust up pipes are known to develop leaks over time due to heat cycling and flex joints failing. Wehrli Custom Fabrication engineered the WCF100654 up pipe using durable 2-inch stainless steel tubing to provide a stronger and more reliable exhaust path between the exhaust manifold and turbocharger. This upgrade helps reduce exhaust restriction while improving turbo response and long-term reliability.
Each kit includes the required exhaust gaskets for proper sealing during installation, making this a straightforward upgrade for LB7 Duramax owners running aftermarket single turbo setups.
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Key Features
- High-quality 2 inch stainless steel construction
- Designed for single turbo Duramax applications
- Improves exhaust flow to the turbocharger
- Eliminates common factory up pipe leak issues
- Includes necessary gaskets for installation
- Direct fit for LB7 Duramax engines
Fitment
- 2001 Chevrolet Silverado 2500HD / 3500HD 6.6L Duramax LB7
- 2002 Chevrolet Silverado 2500HD / 3500HD 6.6L Duramax LB7
- 2003 Chevrolet Silverado 2500HD / 3500HD 6.6L Duramax LB7
- 2004 Chevrolet Silverado 2500HD / 3500HD 6.6L Duramax LB7
- 2001-2004 GMC Sierra 2500HD / 3500HD 6.6L Duramax LB7
Application Note: This passenger side up pipe is intended for use with aftermarket single turbo systems and may not be compatible with factory turbocharger configurations.
Frequently Asked Questions
What does the passenger side up pipe do?
The passenger side up pipe carries exhaust gases from the exhaust manifold to the turbocharger. Improving its design can reduce restriction and improve turbo response.
Why upgrade the factory LB7 up pipes?
Factory up pipes are known to develop leaks due to thermal expansion and flex joint failure. Upgrading to a stainless steel pipe improves durability and reliability.
Is this compatible with stock turbo setups?
This pipe is designed for aftermarket single turbo systems and may not align properly with the factory turbocharger configuration.
Does the kit include gaskets?
Yes. The Wehrli WCF100654 includes exhaust gaskets required for installation.
Will this improve turbo spool?
Reducing exhaust restriction and eliminating leaks can improve turbo spool efficiency and overall engine performance.
Specifications for WEHRLI CUSTOM FAB WCF100654
| Specification | Details |
|---|---|
| Brand | Wehrli Custom Fabrication |
| Part Number | WCF100654 |
| UPC | Not Listed by Manufacturer |
| GTIN | Not Listed |
| Material | Stainless Steel |
| Pipe Diameter | 2 Inch |
| Shipping Weight | Approximately 6 lbs |
| Shipping Method | UPS / FedEx Ground |
| Prop 65 Warning | This product may contain chemicals known to the State of California to cause cancer or reproductive harm. For more information visit https://www.P65Warnings.ca.gov |
