The AFE 49-04085 Atlas 5 Inch Filter-Back Exhaust System is the perfect upgrade for your 2017-2019 L5P Duramax. This system is made from 5" mandrel-bent aluminized tubing for durability and longevity, and utilizes factory mounting locations for a hassle-free installation. It also features a high quality intercooled tip for an aggressive look and improved airflow.