Evan Fischer SET-REPF960313 Catalytic Converter Set for Ford 97-98 F-150/F-250/Expedition Left Right 5-year or 50,000-mile limited warranty Emission: 47-State Legal (Cannot Ship to CA or NY or ME) EPA N/TB6000/31085NN, N/TB6000/31075NN 2 Sensor Ports Single (2-bolt spinner flange), Upstream and Downstream Oxygen Sensor Port Location