Wehrli 20-24 Chevrolet 6.6L L5P Duramax Passenger Side 3.5in Intercooler Pipe - Gloss Black

If you're working on a 2020-2025 Chevrolet Silverado 2500 HD or 3500 HD, or a similar GMC Sierra, with the 6.6L L5P Duramax engine, this passenger side intercooler pipe from Wehrli is a solid upgrade. It replaces the factory two-piece plastic pipe with a single, larger 3.5-inch diameter aluminum pipe designed to handle higher boost pressures more reliably.

This pipe is well-built with 14-gauge aluminum and features a CNC-machined flange that uses a double O-ring seal. This setup, along with the included silicone boot and stainless steel T-bolt clamps, helps prevent boost leaks and blown boots that can happen with the stock components. It also has a threaded bung to reinstall your OEM intake temperature sensor. The gloss black finish looks sharp under the hood, and it's designed as a direct bolt-on installation that doesn't require any other modifications or tuning.

This pipe is a direct replacement for the stock unit and is compatible with trucks as they came from the factory. It's a good way to improve the reliability of your intercooler system, especially if you plan on running higher boost levels.