Product Details Home > Product > Product Details Products Details MBRP 4″ DUAL OUTLET XP SERIES FILTER-BACK EXHAUST|2015-2016 FORD 6.7L POWERSTROKE (ALL CREW & EXTENDED CABS) Part Number: SKU: S6288409BKSJ Categories: 2011-2016 6.7L Powerstroke, Exhaust Systems Call us now for our best price (574) 349-4354 Product Description Extra Info: MBRP Exhaust XP Series, Filter Back System. 4in. Filter Back; Dual Outlet Single Side; T409