aFe 49-43038-B MACH FORCE XP Cat-Back Exhaust System for Ford F-150 3 inch to 3.5 inch diameter stainless steel High-flow muffler 4.5 inch x 12 inch wrinkle-black tip Single side exit Made and assembled in the USA; for Ford F-150 ecoboost 11-13 V6-3.5l (tt)