MagnaFlow Standard Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 23558 helps keep the check engine light off. DIY installation is easy with the proper tools (no cutting or welding required). With features including mandrel-bent tubing to eliminate flow restrictions and stainless steel construction to resist corrosion, you can have confidence in the quality of this catalytic converter. Using state-of-the-art 3D scanning systems in the design process, the MagnaFlow metrology department ensures this new part to fit and function like the original equipment.This direct-fit catalytic converter is designed to fit the 1981-1984 BMW 633CSi and 1983-1984 BMW 533i. The included gaskets & hardware reduce the possibility of a leaking seal while avoiding the need to reuse corroded factory parts for installation. This replacement part is designed to meet or exceed Federal emissions requirements set forth by the EPA, complying with legal standards for pre-OBDII Federally registered vehicles. Direct Fit Catalytic Converter; 49 State; Standard Series; 2.5in. Tubing; 2.25in. Inlet/2in. Outlet; Overall L-69.75in.; O2Sensor Location Pre/Post Convt; NotAirTubeKitAdaptable; MagnaFlow specializes in superior catalytic converter and exhaust technology and each converter is designed to the exact original equipment specifications while keeping the Check Engine Light off. What's Included: Magnaflow Conv BMW 69.75X6.5X4 1.75/1.75 Vehicle Fitment: 1983-1984 BMW 533i Base 1981-1984 BMW 633CSi Base
