Maintain the emissions system on your 2003-2004 Dodge 5.9L Diesel with a high-quality replacement Catalytic Converter. With direct-fit options available for some applications, you can replace your Catalytic Converter with a hassle-free, bolt-on installation. Installing universal Catalytic Converters usually requires fabrication like cutting and welding as these components can be used for multiple different applications and exhaust systems. XDP has the replacement Catalytic Converter your vehicle needs from leading brands like Magnaflow.