Catalytic Converter for 2003 Nissan Altima 2.5 - Not For California Emission Vehicles Fits: Nissan Altima 2.5 (2002, 2003, 2004, 2005, 2006). Direct fit. Manifold gasket included. Oxygen sensors ports in OEM positions. Stainless steel construction. 5 years manufacturer's warranty Complies with Federal EPA aftermarket Catalytic Converter standards. Not legal to use in California. Cannot be shipped to California. Not legal to use on CARB vehicles in NY State.