Keep the check engine lights off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 5411031. With features including free-flowing mandrel-bent tubing and highly corrosion-resistant stainless steel construction, easily install this spun body converter using the proper tools, with 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. Our compact, low-mass design also allows for greater thermal efficiency. This direct-fit catalytic converter is designed specifically for the 2008-2013 BMW M3 and interchanges with OE part 18 30 7 848 117.

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. It has undergone additional testing to comply with CARB guidelines to allow for legal use in California and CARB-restricted states for the listed vehicles.