california is it illegal to use used catalytic converters
All California State Catalytic converters are CARB compliant. Converters in this catalog are based on Executive Orders issued by the California Air Resource Board and must be used in accordance with this information. In California, it is illegal to select a catalytic converter for installation based solely on vehicle weight and engine size. All Federal catalytic converters meet EPA requirements. Federal Catalytic Converters are not legal for sale, installation or use on licensed vehicles in the state of California.