Walker 16198 Catalytic Converter - Left

Walker EPA Direct-Fit Catalytic Converter 16198

Walker EPA Direct-Fit Catalytic Converter 16198 is built for specific vehicle applications and engineered to meet EPA standards. It uses a stainless steel body, ceramic substrate, and direct-fit flange connections for a factory-style exhaust replacement on select Nissan and INFINITI models.

Key Features

• Direct-fit design for specific applications
• EPA-compliant construction for federal emissions use
• Stainless steel body with ceramic substrate
• Round body design with midbed oxygen sensor location
• 3-bolt welded flange inlet and 2-bolt welded flange outlet
• Designed for import and domestic OBDII vehicles
• Walker EPA product line for emissions-focused exhaust replacement

Product Details

Walker EPA 16198 is a direct-fit catalytic converter designed for select Nissan 350Z, 370Z, and INFINITI G35, G37, Q50, Q60, Q70, Q70L, QX70, FX35, M35, M37, Q40, EX37, and QX50 applications. It is built with a stainless steel body, round converter housing, and ceramic substrate to support emissions system function while matching the original exhaust layout on covered vehicles. This part cross-references AP Exhaust 642714 for the same application.

The Walker EPA line focuses on emissions-system replacement parts that follow EPA requirements for federal-use applications. For buyers searching for a catalytic converter for 2003-2009 Nissan 350Z left side or a catalytic converter for 2003-2008 INFINITI G35 left side, part number 16198 is a direct-fit option with application-specific mounting points and midbed oxygen sensor placement.

Common Problems This Part Addresses

• Failed catalytic converter efficiency codes
• Exhaust restriction from a worn or damaged converter
• Emissions test failure on covered federal-use vehicles
• Rattling or deteriorated converter substrate
• Exhaust leaks at the converter connection points

Installation Notes

• Verify exact year, make, model, and position before ordering.
• Fits 2003-2009 Nissan 350Z, Left; 2009-2017 Nissan 370Z, Left; and select INFINITI applications including G35, G37, Q50, Q60, Q70, Q70L, QX70, FX35, M35, M37, Q40, EX37, and QX50.
• Exhaust gasket is recommended for installation.
• Additional parts may be needed to complete installation, including 31688 and 31386 for listed applications.
• Not legal for sale or use in California and other CARB-compliant states; legal in New York and Maine on EPA federal-emission-equipped vehicles only where noted.

Quality Assurance

Walker EPA catalytic converters are built to comply with EPA standards for covered applications and are intended for direct replacement on specific OBDII vehicles. Part number 16198 is designed to deliver a factory-style fit and emissions-system service on the listed Nissan and INFINITI models.