Walker 16590 Catalytic Converter - Front

Walker EPA 16590 Catalytic Converter

Walker EPA 16590 is a direct-fit front catalytic converter built for specific Honda and Acura applications. It is designed for 2008-2014 vehicles with EPA Federal Emission coverage and uses a stainless steel body with a ceramic substrate for OE-style exhaust service.

Key Features

• Direct-fit catalytic converter for the front position
• Specific fitment for 2008-2012 Honda Accord and 2009-2014 Acura TSX
• Stainless steel body with ceramic substrate
• 4-bolt welded flange inlet and 3-bolt welded flange outlet
• Pre- and post-catalyst oxygen sensor locations
• Mounting hardware included
• Overall length: 16.580 in.
• Body shape: round

Product Details

Walker EPA 16590 is part of the Walker Ultra Direct-Fit Catalytic Converter line, which focuses on EPA-compliant replacement coverage for import and domestic OBDII vehicles. This unit is built as a specific-fit front converter for the Honda Accord and Acura TSX, with flange-style connections that match the listed applications for a cleaner replacement installation. The part number 16590 is also cross-referenced by AP Exhaust 641499 for the same application.

For fitment, this converter fits 2008-2012 Honda Accord, front, and fits 2009-2014 Acura TSX, front. It is listed for Federal and California emission models, but it is not legal for sale or use in California and other CARB-compliant states. Legal use in New York and Maine applies only to EPA Federal Emission equipped vehicles.

Common Repair Uses

• Replacing a failed front catalytic converter on a Honda Accord or Acura TSX
• Addressing catalyst efficiency fault codes tied to pre- and post-catalyst sensor readings
• Restoring exhaust flow after converter substrate damage or restriction
• Repairing exhaust leaks at the inlet or outlet flange connection points
• Correcting emissions-related drivability issues on EPA Federal Emission vehicles

Installation Notes

• Exhaust gasket is recommended during installation
• Additional part needed to complete installation: 31556
• Verify emission compliance before purchase and installation
• Confirm front-position fitment and flange style against the original exhaust layout
• Use the listed oxygen sensor locations when diagnosing or transferring sensors

Quality Assurance

Walker EPA 16590 is engineered to meet EPA standards for the listed applications and is built with a stainless steel housing and ceramic substrate for replacement service. The Walker Ultra Direct-Fit line is intended for OBDII vehicles and is supplied with the fitment and compliance details needed for application-specific exhaust repair.