Wehrli 2.75 to 3 Inch Silicone Reducer Boot and Clamp Kit

Seal a 2.75-Inch to 3-Inch Charge-Air Connection

Wehrli WCF207-103 combines a reinforced 2.75-inch to 3-inch inside-diameter silicone reducer with the two matching T-bolt clamps needed for a secure transition. The 4.5-inch overall length is cataloged as a replacement connection for multiple WCFab intercooler-pipe and high-flow intake kits.

Key Features

• Transitions from a 2.75-inch inside diameter to a 3-inch inside diameter
• 4.5-inch straight reducer length for a stable overlap on adjoining pipes
• Reinforced silicone construction suited to turbocharged charge-air plumbing
• Includes one clamp sized for each end of the reducer
• T-bolt clamp design supports even clamping pressure around the connection
• Manufacturer-listed replacement component for selected WCFab kits

Fitment

Confirm both pipe outside diameters, available straight engagement length, operating temperature, pressure requirements, and surrounding clearance. Vehicle year and model alone do not establish fitment for a universal reducer.

Specifications

What's Included

• One 2.75-inch to 3-inch ID straight silicone reducer boot with WCFab logo
• One 3-inch T-bolt clamp
• One 2.75-inch T-bolt clamp

About Wehrli

Wehrli Custom Fabrication develops diesel-truck intake, charge-air, cooling, exhaust, suspension, and engine-bay components in the United States. Replacement boots and clamps are cataloged by exact dimensions and kit application, making careful measurement the most reliable way to confirm compatibility.

Related Parts

• Wehrli 2017-2019 L5P Duramax 3-inch driver-side intercooler pipe kit - one of the WCFab kit families for which this reducer size is manufacturer-listed as a replacement connection.

FAQ

It is a Wehrli 2.75-inch to 3-inch inside-diameter straight silicone reducer boot supplied with matching T-bolt clamps.

No. It is selected primarily by pipe diameter, engagement length, pressure, temperature, and clearance, although WCFab lists it for specific replacement-kit applications.

The manufacturer lists an overall length of 4.5 inches.

Yes. The kit includes one 3-inch T-bolt clamp and one 2.75-inch T-bolt clamp.

No. This is a reducer with different inside diameters at each end and should only be used where that transition is required.

Not automatically. Confirm the actual pipe outside diameters, bead locations, available overlap, and system operating conditions before installation.

Orientation depends on the pipe layout. Install the smaller and larger ends on the matching pipe diameters without twisting or side-loading the boot.

Inspect the clamp bands, bolts, and threads before reuse. Replace any clamp that is distorted, damaged, or unable to hold the specified tension.

Installation Instructions

1. Measure both pipe outside diameters and verify the required reducer length.
2. Allow the charge-air system to cool, then remove the existing boot and clamps.
3. Clean oil residue and debris from the pipe ends without damaging sealing beads.
4. Slide the loose T-bolt clamps over the correct ends of the silicone reducer.
5. Seat the reducer evenly over both pipes with adequate overlap beyond each bead.
6. Position each clamp squarely behind the pipe bead and away from the reducer edge.
7. Tighten the clamps evenly to the current WCFab or clamp-manufacturer specification.
8. Start the engine, pressurize the charge-air system as appropriate, and inspect for movement or leaks.

California Proposition 65 Warning: This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.