Quick view 4" Turbo Down Pipe, T409, Ford F-250/350/450 6.4L Powerstroke 2008 - 2010 SKU: FS9455 Compare $279.99 INSTALL INSTRUCTIONS MBRP FS9455 Instructions 4" Turbo Down Pipe, T409, Ford F-250/350/450 6.4L Powerstroke 2008 - 2010 Replaces restrictive factory unit 2pc design for simple installation Quicker throttle response and cooler EGT's Up to 40rwhp... Add to Cart Add to Cart Add to Wish List Add to My Wish List Create New Wish List