Keep the emission system on your 2017-2019 Chevy/GMC 6.6L L5P Duramax functioning properly with a high-quality replacement Catalytic Converter. Direct-fit Catalytic Converters allow for a hassle-free installation as they are designed to mount in the factory location without the need for cutting or welding. Universal Catalytic Converters can be used on several different applications and typically are installed by welding and cutting your existing exhaust system. XDP offers Catalytic Converters from Magnaflow to replace the clogged component on your vehicle.