Evan Fischer REPC960303 Catalytic Converter for 96-98 C/K1500 C/K2500 Silverado Sierra 5-year or 50,000-mile limited warranty Emission: 47-State Legal (Cannot Ship to CA or NY or ME) 4 Sensor Ports, Upstream and Downstream Oxygen Sensor Port Location, EPA N/TB6000/69009NN 37 in. Overall Length Single (3-bolt spinner flange) Inlet | Single (2-bolt welded flange) Outlet