Magnaflow Diesel METALLIC-CAT Catalytic Converter fits 2001 - 2006 Chevy GMC Duramax with 4" exhaust.
Part # 60021
If you've replaced your factory exhaust system with a CAT-Delete system, you may have found yourself in a position where you need to re-install a catalytic converter to comply with your local emissions laws. We can help you out with a MagnaFlow Universal Diesel Catalytic Converter. These universal diesel catalytic converters are specially formulated to control diesel exhaust. They contain a metallic substrate for enhanced durability and maximum CFM flow to help retain the flow characteristics that your performance exhaust system was designed to deliver.
*Not CARB Approved