This is a 3" Universal Catalytic Cat Converter High Flow EPA OBD II Emission Standard from YITAMOTOR.certifications:OBD I , OBD-II , Federal EPA , Non-CARB, material:Stainless steel, restricted states:California, new york, colorado, maine, converter type:Universal fit, cell count:400 cell, body shape:Round, inlet/outlet diameter:3" inside diameter, overall length:11", engine limit:5.9l, oxygen sensor ports:NO, substrate:Ceramic, placement on vehicle:Left, placement on vehicle:Right, placement on vehicle:Front, placement on vehicle:Rear, interchange part number:410300, warranty:5 years or 50,000 miles limited