Product Details Home > Product > Product Details Products Details MBRP 4″ DUAL INSTALLER SERIES FILTER-BACK EXHAUST SYSTEM|2008-2010 FORD 6.4L POWERSTROKE (ALL CABS & BEDS) Part Number: SKU: S6244ALBKSJ Categories: 2008-2010 6.4L Powerstroke, Exhaust Systems Call us now for our best price (574) 349-4354 Product Description Extra Info: MBRP Exhaust Installer Series, Filter Back System. 4in. Filter Back; Cool Duals (TM); AL