Wehrli 2004.5-05 Duramax LLY P/S 3in. Intercooler Pipe - Candy Teal

Starting with a 3-inch diameter, this passenger side intercooler pipe from Wehrli is made from 14-gauge aluminum, a solid choice for replacing the factory 2.5-inch pipe on your 2004.5-2005 Duramax LLY. The larger diameter and mandrel-bent design help improve airflow between the turbo and the engine, which can lead to better efficiency and quicker turbo spool-up. This pipe is designed to be a direct fit, meaning it works with your stock Y-bridge and doesn't require any extra modifications or tuning to install.

Wehrli uses upgraded silicone boots and stainless steel t-bolt clamps in place of the factory clip ring design. This setup is built to handle higher boost pressures, helping to prevent leaks and blown boots that can happen with the stock components. The candy teal powder coat finish not only looks sharp but also adds a layer of durability. It's a well-built part that addresses common weak points in the factory intercooler piping system.

This pipe is a straightforward bolt-on upgrade that installs with basic hand tools. While it works perfectly on a stock truck, it also pairs well with emissions-compliant tuning and drop-in turbochargers if you're looking to get more out of your Duramax.