Maintain the emissions system on your 2001-2004 Chevy/GMC 6.6L LB7 Duramax with a high-quality replacement Catalytic Converter. Installing universal Catalytic Converters usually requires fabrication like cutting and welding as these components can be used for multiple different applications and exhaust systems. With different types on the market, you can find Direct-fit Catalytic Converters that are specially engineered to mount in the factory location on your vehicle without the need for additional fabrication. XDP has the replacement Catalytic Converter your vehicle needs from leading brands like Magnaflow.