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1999-2003 BMW 540i Direct-Fit Catalytic Converter 452451 Magnaflow superchips 9L/L6 1996 Ford E-150 EconolineKeep the check engine light off with MagnaFlow California Grade CARB Compliant Direct Fit Catalytic Converter 452451. 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