This 3.3L Catalytic Converter from YITAMOTOR is compatible with the 2004-2006 Toyota Sienna BANK 1.certifications:OBD-II , Federal EPA , Non-CARB, material:Stainless steel, restricted states:California, New York, Colorado , Maine, fitment type:Direct replacement, connection type:6 Bolt , 2 Bolt Welded Flange, inlet type:Single (6-bolt welded flange), outlet type:Single (2-bolt welded flange), dimensions:18 in. overall length, oxygen sensor location:Pre-catalyst, placement on vehicle:Firewall Side, Right, substrate:Ceramic, interchange part number:16393, 58144 , 40374, other part number:750056, 750054, 641290, warranty:5 years or 50,000 miles limited