MagnaFlow California Grade CARB Compliant Direct Fit Catalytic Magnaflow California Grade D Fit Catalytic Converter Chevy Express GMC Savana (4551211) Catalytic Converter Direct Fit California OBDII Converters Magnaflow CA MagnaFlow 5451448 MagnaFlow California Grade CARB Compliant Direct Fit. Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct Fit Catalytic Converter 4551211. 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 to fit the 2003 2005 Chevrolet Express 1500, 2003 2005 GMC Savana 1500, and additional vehicles. 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.