Wehrli 11-16 Duramax LML Passenger Side 3.5 in. Intercooler Pipe - Gloss White

This 3.5-inch high-flow intercooler pipe from Wehrli is built from 14-gauge aluminum, a solid choice for replacing the factory plastic two-piece pipe on your 2011-2016 Duramax LML. The factory pipe is a known weak point, prone to blowing off under higher boost pressures, which leads to significant boost leaks and a loss of power. This one-piece aluminum design eliminates that weak point entirely.

Wehrli uses upgraded silicone boots and stainless steel t-bolt clamps, which are much more reliable at holding higher boost pressures compared to the stock components. This means you can expect improved efficiency, better throttle response, and quicker turbo spool-up. It’s designed to be a direct fit, meaning you can reinstall your OEM intake temperature sensor into the incorporated threaded bung and use the stock Y-bridge without needing any other modifications or tuning. The gloss white powder coat finish also adds a clean look under the hood.

This pipe is a straightforward bolt-on installation using basic hand tools. While it doesn't require tuning to see benefits, it pairs well with emissions-compliant tuning and drop-in turbochargers for even more performance gains.