This Exhaust Manifold 2.9L Catalytic Converter from YITAMOTOR is compatible with the 2007-2012 Chevrolet Colorado 2.9L.certifications:OBD-II , Federal EPA , Non-CARB, material:Stainless steel, restricted states:California, New York, Colorado , Maine, fitment type:Direct replacement, connection type:4, 7 Bolt Welded Flange, inlet type:Single (7-bolt welded flange), outlet type:Single (4-bolt welded flange), oxygen sensor location:Pre & post catalyst, dimensions:24.25 in. overall length, oxygen sensor ports:2, substrate:Ceramic, interchange part number:16611, 59223, 49378, other part number:12607896,12604220,50487,079-5229, warranty:5 years or 50,000 miles limited