MagnaFlow 51847 MagnaFlow Direct Fit Catalytic Converters Summit Racing Magnaflow 5451400 Audi Q7 3L Drivers side Direct Fit Magnaflow California Direct Fit Catalytic Converter Audi Q7 (11 15) (5451400) MagnaFlow California Grade CARB Compliant Direct Fit Catalytic Audi Q7 Performance Exhaust Systems Mufflers, Headers, Tips. Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct Fit Catalytic Converter 5451400. With features including free flowing mandrel bent tubing and highly corrosion resistant stainless steel construction, easily install this spun body converter yourself using the proper tools, no cutting or welding required. MagnaFlow's state of the art metrology department uses the latest 3D scanning systems during research and development, so you can be confident that your new part will fit and function like the original equipment. By replicating the OE spun body design, the single laser fusion weld greatly reduces the possibility of a leak, and our compact, low mass design also allows for greater thermal efficiency. This direct fit catalytic converter is designed specifically for the 2011 2015 Audi Q7. Avoid potential exhaust leaks by using the included gaskets to get a proper seal. This replacement part is designed to meet or exceed California Air Resource Board requirements, and has undergone additional testing to comply with CARB guidelines to allow for legal use in California and CARB restricted states, for the listed vehicles.