YITAMOTOR high-flow catalytic converters increased exhaust flow allowing your engine to make more power and improving vehicle performance. certifications:OBD-II , Federal EPA , Non-CARB, material:Stainless steel, restricted states:California, new york, colorado, maine, fitment type:Direct replacement, inlet type:2 Bolt Welded Flange, outlet type:2 Bolt Welded Flange, engine:2.4L, oxygen sensor ports:1, substrate:Ceramic, interchange part number:54737, 643001, 40483, OPCT1017, 18484, 0962607, warranty:5 years or 50,000 miles limited