MagnaFlow 551129 Catalytic Converter - Front Rearward

California OBDII Direct-Fit Converter

MagnaFlow 551129 is a California Grade, CARB-compliant direct-fit catalytic converter for the 2009-2013 Nissan Maxima. It is built for the front rearward position and is designed to replace the original unit with bolt-on installation, no cutting or welding required.

For shoppers searching for a 2009-2013 Nissan Maxima catalytic converter replacement, this MagnaFlow part number 551129 combines stainless steel construction, a ceramic substrate, and OE-style fitment details to help restore emissions system function.

Key Features

• Direct-fit catalytic converter for specific Nissan Maxima applications
• CARB-compliant California Grade design for listed vehicles
• Stainless steel body and tubing for corrosion resistance
• Ceramic substrate with compact, low-mass construction
• Bolt-on inlet and outlet for straightforward installation
• Includes gaskets and mounting hardware
• Post-converter oxygen sensor location
• Interchanges with OE part 208A2-9N90A

Product Details

MagnaFlow’s Direct-Fit CALIFORNIA OBDII CONVERTERS line is built around OE-style replacement fitment, using 3D scanning and spun-body design replication to match original equipment dimensions and function. Part number 551129 uses mandrel-bent stainless tubing and a single laser fusion weld to reduce leak points while supporting thermal efficiency. This makes it a practical choice for drivers needing a 2009-2013 Nissan Maxima catalytic converter that installs without fabrication.

This part cross-references OE part 208A2-9N90A for the same application.

What It Helps Address

• Check engine light caused by a failing catalytic converter
• Emissions test failure related to converter efficiency
• Corrosion damage to the original exhaust converter assembly
• Exhaust leaks at worn factory seals or flanges
• Fitment issues from using a non-direct replacement part

Installation Notes

Fits 2009-2013 Nissan Maxima, front rearward. Also listed for 2014 Nissan Maxima, front rearward. Use the correct tools and follow factory service procedures for bolt-on installation. The included gaskets and hardware help avoid reusing corroded factory fasteners and sealing components.

Quality Assurance

MagnaFlow 551129 is engineered to meet or exceed California Air Resources Board requirements and has undergone additional testing for CARB guideline compliance on the listed vehicles. The direct-fit design is based on OE scanning data to support proper fit and function.