Wehrli 100410 Stage 1 Wehrli High Flow Intake Bundle Kit | 2020-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P

Features:

• 3in hot side intercooler pipe
• 3.5in cold side intercooler pipe
• Mandrel bent 14-gauge aluminum construction
• Replaces weak factory plastic and rubber pipes
• CNC flange and billet adapter with O-rings
• Eliminates boost leaks under heavy load
• Upgraded silicone boots and t-bolt clamps
• Retains factory sensors and mounting points
• No tuning required, bolt-on install
• Durable custom powder coat finish
• Improves throttle response and turbo spool
• Made in the USA

Hot and Cold Side Intercooler Pipe Upgrade for 6.6L Duramax

If you’re looking to shore up the airflow system on your L5P Duramax and eliminate some of the common weak points in the factory design, the Wehrli Stage 1 High Flow Intake Bundle Kit is a smart, performance-minded upgrade. This isn’t just a cosmetic refresh—it’s a well-thought-out package that replaces the stock intercooler piping with stronger, better-flowing components that are built to handle more boost, more heat, and more demanding driving. Right out of the box, you’re getting a 3-inch hot side intercooler pipe and a 3.5-inch cold side pipe. That’s a significant upgrade over the restrictive, two-piece 2.5-inch driver-side pipe and the plastic/rubber construction on the passenger side. The hot side pipe eliminates the OEM resonator and middle boot joint, cleaning up the airflow path and improving durability in the process. The cold side gets a CNC-machined flange and a black anodized billet aluminum adapter with double O-rings for a tight, leak-free seal. Wehrli also replaces the factory clip ring connection at the Y-bridge with a heavy-duty silicone boot and stainless T-bolt clamps—no more blown boots or frustrating boost leaks.

High-Quality Aluminum Construction with Bolt-On Install

Each pipe is crafted from 14-gauge aluminum with smooth mandrel bends that optimize flow. Not only are they stronger and more efficient, but they’re finished in your choice of WCFab’s custom powder coat colors, so they add a personalized touch to your engine bay while holding up against heat, oil, and road grime. These are parts made to perform and look good doing it. Better yet, installation is bolt-on and straightforward. Everything is designed to work with factory sensors and mounting points, so there’s no cutting, tuning, or modification required. The kit includes all the necessary silicone boots, clamps, O-rings, and hardware to get the job done with basic hand tools.

Fits: 2020, 2021, 2022, 2023, 2024, 2025 GM 2500/3500HD 6.6L Duramax L5P

Note: This Product cannot ship to the state of California