This Borla resonator for the 2017, 2018, 2019, and 2020 Ford Raptor or 2019-2020 F-150 Limited 3.5L Ecoboost V6 provides additional sound attenuation, improving the sound of your ride. This assembly fits either the Borla 60637 or 60638 mid-muffler assemblies. Plus, it includes heatshields on pipes. Constructed out of premium T-304 stainless steel, superior to T-400 series (such as 409), to give you the absolute best in performance and durability. Its ultra-smooth mandrel bends ensure maximum flow and power, and precision computer numerical control (CNC) manufacturing ensures an accurate fit. Best of all, BORLA stands behind every Mid-Section with a Million-Mile Warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand.