Wehrli 04.5-10 Chevrolet 6.6L LLY/LBZ/LMM Duramax 3in Down Pipe - WCF100120Find parts that fit my vehicle

Exhaust systems are a great way to enhance the looks, sounds, and performance of your vehicle.

Downpipes are the first part of the exhaust that connects your turbocharger to the rest of your exhaust. Many OEM downpipes are known to be restrictive with their piping diameter. If you are looking for a simple way to increase the horsepower on your turbocharged vehicle, we recommend replacing the OEM downpipe with an aftermarket downpipe. After installing an aftermarket downpipe, you will likely need a tune to adjust for the change in air fuel ratio. After getting a tune, your vehicle should perform better and have a better throttle response.

Pop the hood on a diesel enthusiast's truck somewhere in North America and you may find my company's logo on the engine. Welded to an intake or intercooler pipe, this logo represents an awesome responsibility to the diesel enthusiast community that has supported WCFab over the years. It's a responsibility and commitment to ensure WCFab products meet the highest standard of craftsmanship and fitment. We care enough to put our name on it.