Product Description
The WEHRLI CUSTOM FAB WCF207-115 3" X 3.5" ID STRAIGHT REDUCER 4" LONG SILICONE BOOT AND CLAMP KIT provides a secure and reliable solution for connecting mismatched intake or intercooler piping sizes in high-performance diesel applications. Built from high-quality reinforced silicone, this reducer coupler is designed to handle elevated boost pressure, high temperatures, and demanding engine bay environments commonly found in modified diesel trucks.
Whether you're fabricating a custom turbo system, upgrading intercooler piping, or adapting aftermarket intake components, this reducer boot provides a durable and flexible connection between 3-inch and 3.5-inch piping. The included stainless steel clamps ensure a tight seal that prevents boost leaks while maintaining long-term reliability.
Key Features:
- High-quality reinforced silicone reducer coupler
- Transitions from 3" to 3.5" inside diameter
- 4-inch overall length for stable connections
- Handles high boost pressure and elevated engine temperatures
- Ideal for intake piping, turbo systems, and intercooler plumbing
- Includes stainless steel clamps for secure installation
- Durable construction designed for performance diesel applications
This Wehrli reducer kit is commonly used in custom fabrication setups, aftermarket intake systems, and turbo upgrades where pipe diameters must transition smoothly without airflow disruption.
Fitment:
- Universal fit for diesel and performance applications
- Designed for connecting 3-inch piping to 3.5-inch piping
- Commonly used in turbo intake systems, intercooler piping, and custom fabrication builds
- Compatible with Duramax, Cummins, and Power Stroke performance builds
What’s Included:
- 3" to 3.5" straight silicone reducer coupler
- (2) Stainless steel T-bolt clamps
FAQ
What is this reducer boot used for?
This silicone reducer connects two different pipe diameters, allowing a 3-inch pipe to transition into a 3.5-inch pipe while maintaining proper airflow and boost pressure.
Can this coupler handle turbo boost pressure?
Yes. The reinforced multi-layer silicone construction is designed for high-boost diesel applications and can withstand elevated temperatures commonly found near turbochargers and intercooler systems.
Is this reducer only for Duramax trucks?
No. While commonly used on Duramax performance builds, the reducer works with any custom piping setup requiring a 3-inch to 3.5-inch transition, including Cummins and Power Stroke systems.
Does the kit include clamps?
Yes. The WCF207-115 kit includes stainless steel clamps to ensure a secure seal and prevent boost leaks.
Will this work for intercooler piping?
Yes. The reducer is commonly used in intercooler piping systems, intake piping, turbocharger plumbing, and other custom diesel fabrication applications.
| Brand | WEHRLI CUSTOM FAB |
| Part Number | WCF207-115 |
| Product Type | Silicone Reducer Coupler and Clamp Kit |
| Inside Diameter | 3" to 3.5" |
| Length | 4 Inches |
| Material | High-Temperature Reinforced Silicone |
| Clamp Type | Stainless Steel T-Bolt Clamps |
| UPC | Not publicly listed |
| GTIN | Not publicly listed |
| Shipping Info | Ships via standard ground service. Lightweight silicone component with minimal dimensional weight. |
| Prop 65 | Not typically listed for this item. |
