MagnaFlow High Flow Catalytic Converter for 2007 Nissan Altima MagnaFlow Direct Fit California Grade Catalytic Converter 4561258 MagnaFlow Direct Fit California Grade Catalytic Converter 457035 MagnaFlow Direct Fit California Grade Catalytic Converter with. Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct Fit Catalytic Converter 551128. 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. Designed to fit the 2009 2014 Nissan Maxima and 2007 2012 Nissan Altima, this direct fit catalytic converter also interchanges with OE parts 208A3 9N70A and 208A3 JA21A, among others. Hardware is included to eliminate the hassle of working with corroded factory parts. 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.