MBRP GMCA427 3 Inch CARB Approved Turbo Down Pipe | 11-15 GM 6.6L Duramax 2500HD / 3500HD

Replace that restrictive factory downpipe with a MBRP direct replacement downpipe for more flow, fuel economy, and better performance. Removal of OEM catalytic converters may be a violation of emissions laws in your jurisdiction. Ensure that the intended use of this product is permitted. Not for sale or use in the state of California.