Wehrli 20-25 Chevrolet 6.6L L5P Duramax Passenger Side 3.5in Intercooler Pipe - Flat 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 Custom Fabrication is a solid upgrade over the factory plastic component. The stock two-piece plastic pipe can sometimes struggle with higher boost pressures, leading to leaks or even blown boots. This Wehrli pipe addresses that by replacing it with a single, larger 3.5-inch diameter pipe made from durable 14-gauge aluminum.

What sets this pipe apart is its construction. It features a CNC machined flange with a double O-ring seal, which creates a much more reliable connection than the factory setup. This, along with the included high-quality silicone boot and stainless steel T-bolt clamps, helps eliminate boost leaks and ensures the pipe can handle increased boost pressures. It also includes a black anodized billet aluminum adapter and a threaded bung to reinstall your OEM intake temperature sensor. This is a direct bolt-on part that works with your stock truck, requiring no additional modifications or tuning.

This pipe comes in a flat black powder coat finish to look good under the hood. It's designed to be a straightforward replacement, making it a practical choice for improving the reliability and airflow of your L5P Duramax's intercooler system.