Product Description
Improve airflow, boost response, and durability on your Duramax with the WEHRLI CUSTOM FAB WCF100352 DRIVER SIDE HOT SIDE 3" INTERCOOLER PIPE KIT. This performance upgrade replaces the restrictive factory hot-side intercooler piping found on 2004.5-2010 LLY, LBZ, and LMM Duramax trucks with a high-flow 3-inch mandrel-bent aluminum pipe designed to maximize boost flow and reduce pressure drop.
The factory intercooler pipe is known to become a restriction when boost levels increase, especially on tuned or modified trucks. Wehrli Custom Fabrication designed this kit to dramatically improve airflow efficiency while maintaining reliable sealing under high boost conditions. Constructed from precision-formed aluminum tubing and paired with heavy-duty silicone boots and T-bolt clamps, this kit ensures long-term durability for daily driving, towing, and high horsepower builds.
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Key Features
- 3" mandrel-bent aluminum hot-side intercooler pipe
- Improves airflow and reduces boost restriction
- Designed for LLY, LBZ, and LMM Duramax engines
- Heavy-duty silicone boots included
- High-strength T-bolt clamps for reliable sealing
- Improves boost response and turbo efficiency
- Direct replacement for restrictive factory piping
Fitment
- 2004.5 Chevrolet Silverado 2500HD / 3500HD 6.6L Duramax LLY
- 2005 Chevrolet Silverado 2500HD / 3500HD 6.6L Duramax LLY
- 2006 Chevrolet Silverado 2500HD / 3500HD 6.6L Duramax LBZ
- 2007 Chevrolet Silverado 2500HD / 3500HD 6.6L Duramax LBZ
- 2007.5 Chevrolet Silverado 2500HD / 3500HD 6.6L Duramax LMM
- 2008 Chevrolet Silverado 2500HD / 3500HD 6.6L Duramax LMM
- 2009 Chevrolet Silverado 2500HD / 3500HD 6.6L Duramax LMM
- 2010 Chevrolet Silverado 2500HD / 3500HD 6.6L Duramax LMM
- 2004.5-2010 GMC Sierra 2500HD / 3500HD 6.6L Duramax LLY / LBZ / LMM
Frequently Asked Questions
What does the hot side intercooler pipe do?
The hot side pipe carries compressed air from the turbocharger to the intercooler. Increasing the pipe diameter improves airflow and reduces restriction under high boost.
Is this a direct bolt-on upgrade?
Yes. The Wehrli WCF100352 intercooler pipe kit is designed as a direct replacement for the factory hot-side intercooler pipe.
Will this increase horsepower?
This upgrade improves airflow efficiency and reduces pressure drop, which supports increased horsepower on tuned or modified Duramax engines.
Is this upgrade recommended for tuned trucks?
Yes. Trucks running higher boost levels benefit the most from upgraded intercooler piping due to improved airflow and stronger connections.
Does this kit include boots and clamps?
Yes. The kit includes high-quality silicone boots and heavy-duty T-bolt clamps for reliable installation.
Specifications for WEHRLI CUSTOM FAB WCF100352
| Specification | Details |
|---|---|
| Brand | Wehrli Custom Fabrication |
| Part Number | WCF100352 |
| UPC | Not Listed by Manufacturer |
| GTIN | Not Listed |
| Material | Mandrel Bent Aluminum |
| Pipe Diameter | 3 Inch |
| Shipping Weight | Approximately 8 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 |
