Product Details Home > Product > Product Details Products Details MBRP 4″ DUAL INSTALLER SERIES FILTER-BACK EXHAUST SYSTEM|2014-2018 RAM 6.7L CUMMINS 2500 (CC-SB) Part Number: SKU: S6163ALBKSJ Categories: 2007.5-2018 6.7L 24V Cummins, 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