Hi Detrick, I'm pleased to assist you. Yes, this will fit the Federal emission 2011-2012 Mitsubishi Outlander Sport SE 4 Cyl 2.0L, automatic transmission. Use the link provided below to place your order while supplies last. Happy shopping! https://www.carparts.com/catalytic-converter/davico/dav18508?can=CPGG4850_CSQA_20230926

Hi Dan, I'm pleased to assist you. You will know the origin of the vehicle by the VIN. However, the 46-State being referred to in this part is not the origin, it is the emission which is Federal. Check the Vehicle Emission Control Information sticker, usually found underneath the hood, to see if it matches the emission control specifications. Federal emissions (46-state) stickers will simply say, "This vehicle conforms to U.S. EPA regulations," whereas California-emissions (50-state) vehicles will say, "This vehicle conforms to U.S. EPA and State of California regulations." If it matches the Federal emission, use the link below to place an order while supplies last. Your order will come with a 30-day post-purchase price match guarantee. I hope this is helpful. Enjoy your CP shopping experience! https://www.carparts.com/catalytic-converter/davico/dav18508?can=CPGG4850_CSQA_20230222

Hi Andrea, thank you for reaching out. We do not have the information regarding the exact dimensions of the flange for this item. The measurement is similar to the original part, and the fitment selection is guaranteed by simply entering the complete vehicle information. Kindly call our parts team at 1-866-529-0412 and provide the complete vehicle information. We'll be more than glad to help you verify the fitment of this item. Have a nice day.