MagnaFlow universal catalytic converters form the basic building blocks for a comprehensive line of direct-fit applications. The main benefit of the universal catalytic converter is that one unit may cover a wide variety of vehicle makes and models. Installing universal converters often requires the use of welding, cutting and tube bending equipment that is readily available to most professional installers. All California state catalytic converters are torca 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.