[Compatible vehicle] - Catalytic Converter Fit for 2004-2008 Maxima V6, 2005-2006 Altima V6, 2004-2009 Quest SE, SL, SL Special Edition V6. [Reference Number] - This Catalytic Converter is constructed to meet or even exceed OEM quality. [Attention] - Our catalytic converters meet EPA compliance, but cannot be sold or installed in California and Colorado and, under certain circumstances, in Maine and New York. Please check your vehicle's Emission Control Information Label and your state's aftermarket converter regulations to select the proper catalytic converter. [Efficient Purification] - The stainless steel body of high-quality aluminized pipes is not easy to rust, ensuring excellent oxygen storage capacity and long service life. The double-layer high temperature resistant ceramic carrier greatly increases the flow rate and surface area, thereby improving power and fuel economy. [Ensure Fit] To make sure catalytic converter fits your exact vehicle, input your make,model and trim grade into the garage tool.