Product Description
The WEHRLI CUSTOM FAB WCF100590 2IN STAINLESS UP PIPE KIT is a high-quality exhaust upgrade designed specifically for 2001-2004 Chevrolet and GMC LB7 Duramax trucks equipped with a single turbo setup. Factory LB7 up pipes are known to crack and leak over time, causing exhaust pressure loss and reduced turbo efficiency. Wehrli Custom Fabrication engineered this kit to eliminate those issues while improving exhaust flow and reliability.
Constructed from durable 2-inch mandrel-bent stainless steel, this up pipe kit offers improved durability compared to factory components while delivering smoother exhaust flow to the turbocharger. The kit includes premium gaskets and installation hardware to ensure a secure seal and long service life even under high heat and heavy towing conditions.
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Key Features
- 2-inch mandrel-bent stainless steel up pipes
- Designed for single turbo LB7 Duramax applications
- Improves exhaust flow to turbocharger
- Durable stainless construction resists cracking and heat damage
- Includes premium exhaust gaskets
- Direct replacement for restrictive or failing factory pipes
- Designed and manufactured by Wehrli Custom Fabrication
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
Installation Note: This kit is intended for LB7 Duramax trucks running a single turbocharger configuration. Professional installation is recommended when installing exhaust components near the turbo system.
Frequently Asked Questions
What is the advantage of upgrading LB7 up pipes?
Factory LB7 up pipes are known to develop cracks or leaks over time. Upgrading to stainless up pipes improves durability, prevents exhaust leaks, and maintains proper turbocharger efficiency.
Are these pipes larger than factory LB7 pipes?
Yes. The Wehrli kit uses 2-inch mandrel-bent stainless steel piping which offers smoother exhaust flow compared to the restrictive factory pipes.
Does the kit include gaskets and hardware?
Yes. The WCF100590 kit includes exhaust gaskets required for installation.
Will this fit a stock turbo setup?
This kit is designed for single turbo configurations and works with many upgraded turbo setups used in performance LB7 builds.
Is stainless steel important for Duramax exhaust components?
Yes. Stainless steel offers better resistance to heat fatigue, corrosion, and cracking compared to factory mild steel exhaust components.
Specifications for WEHRLI CUSTOM FAB WCF100590
| Specification | Details |
|---|---|
| Brand | Wehrli Custom Fabrication |
| Part Number | WCF100590 |
| UPC | Not Listed by Manufacturer |
| GTIN | Not Listed |
| Material | Stainless Steel |
| Pipe Diameter | 2 Inch |
| Shipping Weight | Approximately 10 lbs |
| Package Dimensions | 24 x 12 x 8 inches |
| 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 |
