Welcome to the AFE 49-44085 5 Inch 409SS HD Filter Back Exhaust. This premium exhaust system is designed for the 2017-2019 L5P Duramax and is constructed from 5" mandrel-bent 409 stainless steel tubing for maximum durability and performance. High quality band clamps and OE style bayonet hangers are used for a hassle-free installation that utilizes the factory mounting locations. This system is the perfect upgrade for those looking to improve the sound and performance of their Duramax diesel. Thanks for choosing AFE!