The MBRP FALCA455 4" Installer Series Turbo Downpipe for your 2008-2010 Ford 6.4L Powerstroke provides increased flow and helps lower exhaust gas temperatures. Built from heavy duty aluminized steel, this Downpipe offers a value price without compromising on the quality. While seams are a major point of rust through for other exhaust manufacturers, MBRP's fully sealed tubing adds years to the life of your exhaust components.