Product Description
Improve airflow and turbo efficiency on your 2003-2007 Dodge Ram 5.9L Cummins with the WEHRLI CUSTOM FAB WCF100346 4" INTAKE KIT. This high-performance intake system replaces the restrictive factory intake components with a smooth-flowing fabricated aluminum intake pipe and high-flow air filter designed to maximize airflow into the turbocharger.
The Wehrli Custom Fab intake system is engineered to reduce intake restriction, improve turbo spool-up, and support increased horsepower levels for both daily driven and high-performance Cummins builds. By utilizing a large diameter 4-inch intake tube, this system allows the turbocharger to breathe more efficiently while helping reduce exhaust gas temperatures during towing or performance driving.
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Key Features
- Large 4" mandrel-bent intake tubing for maximum airflow
- High-flow performance air filter included
- Fabricated aluminum intake pipe construction
- Improves turbocharger efficiency and response
- Supports increased horsepower and airflow demands
- Direct replacement for restrictive factory intake components
- Designed and manufactured by Wehrli Custom Fabrication
Fitment
- 2003 Dodge Ram 2500 / 3500 5.9L Cummins
- 2004 Dodge Ram 2500 / 3500 5.9L Cummins
- 2005 Dodge Ram 2500 / 3500 5.9L Cummins
- 2006 Dodge Ram 2500 / 3500 5.9L Cummins
- 2007 Dodge Ram 2500 / 3500 5.9L Cummins
Installation Note: This intake system is designed as a direct bolt-on upgrade and works with the factory turbocharger or upgraded aftermarket turbo systems.
Frequently Asked Questions
What are the benefits of upgrading to a 4" intake on a Cummins?
A larger 4-inch intake reduces airflow restriction, allowing the turbocharger to spool more efficiently while helping support higher horsepower levels.
Will this intake improve turbo response?
Yes. Increased airflow capacity allows the turbocharger to spool faster and maintain better efficiency under load.
Does this intake require tuning?
No tuning is required. The intake can be installed on stock or modified trucks without needing ECU calibration.
Is this intake compatible with aftermarket turbos?
Yes. The intake system is commonly used on trucks running upgraded turbochargers where increased airflow is required.
Will this intake help reduce EGTs while towing?
Improved airflow into the turbocharger can help lower intake restriction, which may contribute to lower exhaust gas temperatures under heavy load.
Specifications for WEHRLI CUSTOM FAB WCF100346
| Specification | Details |
|---|---|
| Brand | Wehrli Custom Fabrication |
| Part Number | WCF100346 |
| UPC | Not Listed by Manufacturer |
| GTIN | Not Listed |
| Shipping Weight | Approximately 12 lbs |
| Package Dimensions | 28 x 12 x 10 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 |
