Dorman 679-521 Catalytic Converter - Front

OE-Style Catalytic Converter for Maxima

Dorman 679-521 is a specific-fit catalytic converter built for select Nissan Maxima front applications from 2009-2020. It is engineered to match original equipment fit and function, making it a direct replacement choice for exhaust repairs on the Nissan Maxima.

Key Features

• Specific-fit design for select Nissan Maxima front positions
• Stainless steel body with a ceramic substrate
• Flanged inlet and outlet for OE-style connection points
• Includes inlet gasket, outlet gasket, and installation hardware
• Single sensor port and five air tubes
• Standard replacement grade for routine exhaust service
• Cross-references Walker Exhaust 16703 and Gates 52128 for the same application

Detailed Description

This Dorman catalytic converter, part number 679-521, is made for the front exhaust position on Nissan Maxima models from 2009 through 2020. The unit uses a stainless steel body, ceramic substrate, flanged inlet and outlet, and OE-style dimensions to support proper exhaust routing and sealing. With a round manifold inlet port shape and a single sensor port, it is built for direct replacement service where the original converter has failed or no longer meets emissions-related performance needs.

For buyers searching for a 2009-2020 Nissan Maxima front catalytic converter, Dorman 679-521 provides a vehicle-specific solution that follows the original equipment layout. The converter is not CARB certified, so it should be matched to the correct emissions requirements for the vehicle and region before purchase.

What It Helps Address

• Failed or restricted catalytic converter on a Nissan Maxima
• Exhaust leaks at the inlet or outlet flange
• Check engine light concerns related to converter efficiency
• Corrosion or damage to the original converter body
• Replacement needs for front exhaust service on 2009-2020 Maxima models

Installation Notes and Tips

Fits 2009-2020 Nissan Maxima, front. Confirm flange alignment, sensor port location, and exhaust routing before installation. Use the included inlet gasket, outlet gasket, and mounting hardware to help achieve a proper seal. Because this is a specific-fit converter, verify emissions compliance requirements for your vehicle and location before installation.

Quality Assurance

Dorman designs this catalytic converter to match original equipment fit and function on the listed Nissan Maxima applications. Part number 679-521 is built as a standard replacement for direct exhaust service.