Wehrli 11-15 Chevrolet 6.6L LML Duramax 3in Down Pipe (V-Band Style)

If you're working on a 2011-2015 Chevrolet Silverado 2500 HD or 3500 HD, or its GMC Sierra counterpart, with the 6.6L LML Duramax engine, this Wehrli 3-inch V-band style downpipe is a solid option for improving your exhaust flow. It replaces the restrictive, crushed factory downpipe, which can help your turbocharger breathe a bit easier.

This downpipe is constructed from 3-inch tubing, offering a larger diameter than the stock piece to reduce backpressure. It comes with a black ceramic coating for added durability and heat resistance, and includes heat wrap and clamps to help manage exhaust temperatures. It's designed to work with the factory turbo or a factory-style replacement turbo. Keep in mind that this V-band style downpipe is intended for use with exhaust systems that have a V-band connection, typically found on 2011-2014 LML models. If your truck is a 2015.5 or newer LML with a 3-bolt flange exhaust, you'll need a different downpipe with a 3-bolt connection.