WEHRLI CUSTOM FAB WCF207-106 3.5 INCH X 4 INCH ID STRAIGHT REDUCER 3 INCH LONG SILICONE BOOT AND CLAMP KIT

Product Description

wehrli custom fab wcf207-106, 3.5 inch to 4 inch silicone reducer coupler, diesel turbo reducer boot, intercooler pipe reducer hose, duramax intake reducer coupler, high temp silicone turbo coupler, heavy duty diesel silicone reducer boot

The WEHRLI CUSTOM FAB WCF207-106 3.5 INCH X 4 INCH ID STRAIGHT REDUCER SILICONE BOOT AND CLAMP KIT is designed for high-performance diesel intake, intercooler, and turbo piping applications that require a strong and reliable reducer connection. Built from high-quality reinforced silicone, this reducer boot transitions smoothly from 3.5-inch to 4-inch piping while maintaining excellent flexibility, durability, and resistance to boost pressure.

Whether you're building a custom turbo system, upgrading intercooler piping, or repairing a worn coupler, this Wehrli Custom Fab reducer kit provides a dependable solution capable of handling the demands of high-boost diesel engines. The included heavy-duty stainless clamps ensure a secure seal while preventing boost leaks under extreme conditions.

This compact 3-inch long reducer coupler is ideal for tight engine bay applications where space is limited but durability is essential. Wehrli Custom Fab components are widely trusted by diesel builders, racers, and performance enthusiasts for their consistent quality and precise fitment.

Key Features:

• 3.5-inch to 4-inch internal diameter straight reducer
• 3-inch overall length for compact installations
• High-strength reinforced silicone construction
• Designed for turbo, intake, and intercooler piping
• Handles high boost pressure and temperature
• Includes stainless steel T-bolt clamps
• Durable performance-grade materials

Fitment:

• Universal fit for diesel performance applications
• Compatible with 3.5 inch and 4 inch intake or intercooler piping
• Commonly used on Duramax, Cummins, and Power Stroke custom builds
• Ideal for turbo upgrades and intercooler piping transitions

What's Included:

• 3.5" x 4" straight silicone reducer boot
• (2) Heavy-duty stainless steel clamps

FAQ

What is this reducer boot used for?

This reducer coupler is used to connect a 3.5-inch pipe to a 4-inch pipe in turbo, intake, or intercooler systems commonly found on diesel performance trucks.

Can this handle high boost pressure?

Yes. The reinforced silicone construction is designed for high-performance diesel engines and can withstand the elevated boost pressures commonly seen in modified trucks.

Is this compatible with Duramax, Cummins, and Power Stroke engines?

Yes. This reducer is a universal performance coupler and can be used with any diesel application using 3.5-inch to 4-inch piping.

Does the kit include clamps?

Yes. The kit includes two heavy-duty stainless steel clamps designed to securely fasten the coupler to both pipes.

Is this a straight or angled reducer?

This part is a straight reducer coupler designed for inline piping connections.