Product Description
The WEHRLI CUSTOM FAB WCF100163 LBZ DURAMAX HIGH FLOW 3" Y-BRIDGE KIT is a proven airflow upgrade designed to eliminate one of the most restrictive components in the factory LBZ Duramax intake system. The OEM intake bridge on the 2006-2007 Duramax creates turbulence and airflow limitations that can reduce turbo efficiency and throttle response. Wehrli Custom Fabrication engineered this high-flow 3-inch Y-Bridge system to dramatically improve intake airflow and maximize turbocharger performance.
Constructed from precision fabricated aluminum, the Wehrli Y-Bridge features smooth mandrel-bent piping and a larger internal diameter compared to the restrictive stock unit. This results in improved airflow into the intake manifold, better turbo spool, lower drive pressure, and stronger overall engine performance. The kit includes the fabricated Y-Bridge, silicone couplers, and heavy-duty clamps for a secure installation.
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Key Features
- Large diameter 3" high-flow fabricated Y-Bridge
- Eliminates restrictive factory LBZ intake bridge
- Improves airflow to the intake manifold
- Helps increase horsepower and throttle response
- Supports higher boost and performance turbo setups
- Fabricated aluminum construction for durability
- Includes silicone boots and stainless clamps
- Direct bolt-on upgrade for LBZ Duramax engines
Fitment
- 2006 Chevrolet Silverado 2500HD / 3500HD 6.6L Duramax LBZ
- 2007 Chevrolet Silverado 2500HD / 3500HD Classic 6.6L Duramax LBZ
- 2006 GMC Sierra 2500HD / 3500HD 6.6L Duramax LBZ
- 2007 GMC Sierra 2500HD / 3500HD Classic 6.6L Duramax LBZ
Installation Note: This Y-Bridge kit is designed to work with factory turbocharger configurations as well as many aftermarket turbo upgrades. It is commonly installed alongside upgraded intercooler piping or turbo inlet upgrades for maximum airflow gains.
Frequently Asked Questions
What does a Y-Bridge upgrade do on the LBZ Duramax?
The factory Y-Bridge restricts airflow entering the intake manifold. A larger high-flow bridge improves turbo airflow, throttle response, and overall engine efficiency.
Is tuning required after installing this kit?
No tuning is required for installation, but performance tuning can help maximize the airflow improvements this upgrade provides.
Will this work with stock turbochargers?
Yes. The Wehrli Y-Bridge kit is compatible with the factory LBZ turbocharger and many aftermarket turbo systems.
Does this kit increase horsepower?
While gains vary depending on supporting modifications, improving intake airflow can help support higher horsepower levels and improve throttle response.
Is this difficult to install?
This kit is designed as a direct bolt-on upgrade and can typically be installed with standard hand tools.
Specifications for WEHRLI CUSTOM FAB WCF100163
| Specification | Details |
|---|---|
| Brand | Wehrli Custom Fabrication |
| Part Number | WCF100163 |
| UPC | Not Listed by Manufacturer |
| GTIN | Not Listed |
| Shipping Weight | Approximately 8 lbs |
| Package Dimensions | 18 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 |
