Universal HM Grade Catalytic Converter 2.25in (99305HM)Description Keep the check engine light off with MagnaFlow HM Grade Federal EPA Compliant Universal Catalytic Converter 99305HM. The Universal design allows the part to fit a wide array of vehicles, and the stainless steel construction of this catalytic converter is highly resistant to corrosion. The single laser fusion weld greatly reduces the possibility of a leak, and our compact, low mass design also allows for greater thermal efficiency. This