Catalytic Converter for Hummer H3 3.7 (2007, 2008, 2009, 2010) - Not For California Emission Vehicles Fits: GMC Hummer H3 3.7 (2007, 2008) Direct fit. Manifold gasket included. Oxygen sensors ports in OEM positions. Iron cast exhaust manifold. Stainless steel construction. Full manufacturer's warranty for emission and structural integrity (25,000 miles and 50,000 miles /5 years). 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.