MagnaFlow 454031 Catalytic Converter - Front

California OBDII Direct-Fit Converter

MagnaFlow 454031 is a California Grade, CARB-compliant direct-fit catalytic converter for specific Mazda applications. It is built for a bolt-on replacement on the front exhaust position, with stainless steel construction and a ceramic substrate for OE-style fitment and exhaust flow.

Compatible With 2001-2003 Mazda Protege and 2002-2003 Mazda Protege5 front applications, this MagnaFlow California OBDII converter is engineered to help keep the check engine light off while restoring proper exhaust function. The MagnaFlow Direct-Fit CALIFORNIA OBDII CONVERTERS line focuses on vehicle-specific replacement parts that match original equipment layout and installation points.

• Direct-fit design for specific Mazda Protege and Protege5 front applications
• California Grade, CARB-compliant replacement for listed vehicles
• Stainless steel body and tubing for corrosion resistance
• Ceramic substrate with spun-body construction
• Mandrel-bent tubing for freer exhaust passage
• Single laser fusion weld to help reduce leak points
• Includes hangers and mounting hardware; gaskets are included for sealing
• No cutting or welding required when installed with proper tools

Fitment and OE Cross-Reference

Fits 2001 Mazda Protege, front. Fits 2002 Mazda Protege, front. Fits 2003 Mazda Protege, front. Fits 2002-2003 Mazda Protege5, front. This part cross-references OE numbers FS7N-20-50XA and FSAR-20-50X for the same application. MagnaFlow 454031 also interchanges with ZM02-20-500A.

What This Converter Helps Address

• Check engine light concerns related to catalytic converter efficiency
• Exhaust leaks at the converter-to-pipe connection
• Corrosion-related replacement needs on aging exhaust systems
• Fitment issues from using a universal converter on a vehicle-specific application
• CARB compliance requirements for listed California and CARB-restricted vehicles

Installation Notes

Use the included gaskets to help achieve a proper seal and avoid exhaust leaks. This is a bolt-on, specific-fit converter, so installation is straightforward with the proper tools and no cutting or welding. Confirm the vehicle’s year, model, front position, and CARB application details before installation.

Quality Assurance

MagnaFlow uses 3D scanning during development to match OE fit and function, and this converter is built to meet or exceed California Air Resources Board requirements for the listed vehicles. The compact, low-mass design is intended to support thermal efficiency while maintaining a direct replacement layout.