Product Description
The WEHRLI CUSTOM FAB WCF100281 4IN DOWN PIPE is engineered specifically for 2004-2007 Dodge Ram Cummins trucks running a high-mount S300 turbo with a 2nd Gen manifold swap. This performance exhaust component provides a clean, high-flow path for exhaust gases leaving the turbocharger, reducing backpressure and improving turbo efficiency on high performance Cummins builds.
Manufactured using mandrel bent 4-inch steel tubing, this downpipe allows maximum exhaust flow while maintaining proper clearance within the tight engine bay of the 3rd generation Ram chassis. Wehrli Custom Fabrication designed this downpipe specifically for high-mount S300 turbo systems paired with the popular 2nd Gen manifold conversion, making it the perfect solution for performance Cummins builds pushing increased airflow and boost.
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Key Features
- 4-inch mandrel bent high-flow exhaust downpipe
- Designed for high-mount S300 turbo setups
- Compatible with 2nd Gen manifold Cummins swaps
- Improves turbo exhaust flow and reduces backpressure
- Durable steel construction for long-term reliability
- Optimized fitment for 3rd Gen Dodge Ram engine bays
Fitment
- 2004 Dodge Ram 2500 5.9L Cummins
- 2004 Dodge Ram 3500 5.9L Cummins
- 2005 Dodge Ram 2500 5.9L Cummins
- 2005 Dodge Ram 3500 5.9L Cummins
- 2006 Dodge Ram 2500 5.9L Cummins
- 2006 Dodge Ram 3500 5.9L Cummins
- 2007 Dodge Ram 2500 5.9L Cummins
- 2007 Dodge Ram 3500 5.9L Cummins
Important Installation Note: This downpipe is designed specifically for trucks equipped with a high-mount S300 turbocharger and 2nd generation style exhaust manifold. Proper clearance and turbo orientation are required for correct installation.
Frequently Asked Questions
Will this downpipe work with a factory turbo setup?
No. This downpipe is specifically designed for trucks running a high-mount S300 turbocharger paired with a 2nd gen manifold swap.
Is this a full exhaust system?
No. The WCF100281 is a turbo downpipe only and connects the turbo outlet to the rest of the truck’s exhaust system.
What size is the downpipe?
This component uses a full 4-inch mandrel bent design to support high horsepower Cummins builds and improved exhaust flow.
Does this improve turbo performance?
Yes. By reducing exhaust backpressure leaving the turbocharger, a larger downpipe can improve turbo efficiency and support higher horsepower levels.
Is professional installation recommended?
Yes. Because this component is used in performance turbo setups, installation by a professional diesel technician is recommended.
Specifications for WEHRLI CUSTOM FAB WCF100281
| Specification | Details |
|---|---|
| Brand | Wehrli Custom Fabrication |
| Part Number | WCF100281 |
| UPC | Not Listed by Manufacturer |
| GTIN | Not Listed |
| Shipping Weight | Approximately 8 lbs |
| Package Dimensions | 24 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 |
