MBRP FS9455 4 Inch T409 Stainless Down Pipe | 08-10 Ford SuperDuty 6.4L Powerstroke

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.