MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 51237 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 specifically for the 1998-2001 Nissan Altima and interchanges with OE parts 20800-9E725 and 20800-56G27, among others. Avoid potential exhaust leaks by using the included gaskets to get a proper seal. This replacement part is designed to meet or exceed Federal emissions requirements set forth by the EPA, complying with legal standards for OBDII Federally registered vehicles with California or Federal/EPA Emission systems.
Direct Fit Catalytic Converter; 49 State; OEM Grade Series; Overall L-12.50 in.;
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.

Fitment:
1998 Nissan Altima GLE
1998 Nissan Altima GXE
1998 Nissan Altima SE
1998 Nissan Altima XE
1999 Nissan Altima GLE
1999 Nissan Altima GXE
1999 Nissan Altima SE
1999 Nissan Altima XE
2000 Nissan Altima GLE
2000 Nissan Altima GXE
2000 Nissan Altima SE
2000 Nissan Altima XE
2001 Nissan Altima GLE
2001 Nissan Altima GXE
2001 Nissan Altima SE
2001 Nissan Altima XE

Vehicle Fitment