Evan Fischer SET-REPF960319 Catalytic Converter Set for 03-04 Ford Expedition Left and Right Sides 5-year or 50,000-mile limited warranty Emission: 47-State Legal (Cannot Ship to CA or NY or ME) EPA N/TB6000/31075NN, N/TB6000/31085NN 2 Sensor Ports Single (2-bolt spinner flange), Upstream and Downstream Oxygen Sensor Port Location