Product Description
Improve airflow and turbo efficiency on your Duramax with the WEHRLI CUSTOM FAB WCF100302 4" INTAKE KIT WITH AIR BOX STAGE 2, engineered specifically for the 2006-2007 LBZ Duramax platform. This high-performance intake system replaces the restrictive factory intake tubing with a larger 4-inch mandrel-bent intake system designed to maximize airflow, reduce intake restriction, and support higher horsepower levels.
Developed by Wehrli Custom Fabrication, this Stage 2 intake kit includes a high-flow air box system, large-diameter intake tubing, and a premium performance air filter to deliver increased airflow directly to the turbocharger. The result is improved throttle response, quicker turbo spool, and more efficient engine performance whether towing, daily driving, or running higher power levels.
Hidden SEO Tags: LBZ Duramax intake upgrade, Wehrli custom fab intake kit, Duramax cold air intake LBZ, 4 inch intake kit Duramax, LBZ airflow upgrade kit, Wehrli intake system LBZ diesel trucks, Duramax turbo airflow improvement intake.
Key Features
- Large 4" mandrel-bent intake tubing for maximum airflow
- High-flow performance air filter
- Stage 2 intake air box system
- Improves turbo spool and throttle response
- Reduces intake restriction compared to factory system
- Designed specifically for LBZ Duramax engines
- Durable fabricated aluminum construction
- Direct bolt-on installation
Fitment
- 2006 Chevrolet Silverado 2500HD / 3500HD 6.6L Duramax LBZ
- 2007 Chevrolet Silverado 2500HD / 3500HD 6.6L Duramax LBZ (Classic)
- 2006 GMC Sierra 2500HD / 3500HD 6.6L Duramax LBZ
- 2007 GMC Sierra 2500HD / 3500HD 6.6L Duramax LBZ (Classic)
Installation Note: This intake kit is designed as a direct replacement for the factory intake system and installs using factory mounting locations with basic hand tools.
Frequently Asked Questions
What makes the Stage 2 intake different from the factory intake?
The Stage 2 intake uses a larger 4" intake tube and high-flow air box system which significantly reduces restriction compared to the factory intake.
Will this intake improve turbo spool?
Yes. The larger intake diameter allows more air to reach the turbocharger, helping improve turbo spool response and overall engine efficiency.
Is tuning required when installing this intake?
No tuning is required. This intake can be installed on a stock truck or vehicles running performance tuning.
Does this kit include the air filter?
Yes. The kit includes a reusable high-flow performance air filter designed to maximize airflow while maintaining proper filtration.
Will this fit LLY or LMM Duramax engines?
This intake system is specifically designed for LBZ Duramax engines and may not properly fit other Duramax generations.
Specifications for WEHRLI CUSTOM FAB WCF100302
| Specification | Details |
|---|---|
| Brand | Wehrli Custom Fabrication |
| Part Number | WCF100302 |
| UPC | Not Listed by Manufacturer |
| GTIN | Not Listed |
| Shipping Weight | Approximately 10 lbs |
| Package Dimensions | 20 x 16 x 12 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 |
