Catalytic Converter For Chevrolet Express GMC Savana 1500 2500 3500 4 MagnaFlow California CARB Compliant Direct Fit Catalytic Converter 4551291 Catalytic Converter For Chevy Express GMC Savana 1500 2500 3500 4.3 4. MagnaFlow 5451187 MagnaFlow California Grade CARB Compliant Direct Fit MagnaFlow California CARB Compliant Direct Fit Catalytic Converter 452360 MagnaFlow California CARB Compliant Manifold Catalytic Converter 452014. 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.