Walker 84373 Catalytic Converter

Walker CalCat Direct-Fit Converter

Walker CalCat 84373 is a direct-fit catalytic converter built for specific Nissan Sentra applications from 2013 through 2019. It is engineered for CARB-compliant replacement use and follows an OE-style fit for straightforward exhaust service.

Key Features

• Direct-fit design for specific Nissan Sentra applications
• CARB certified for use in California and other CARB-regulated states
• Stainless steel body with a ceramic substrate
• Round converter body with welded 2-bolt flange connections
• Post-catalyst oxygen sensor location
• Walker CalCat line focused on compliant replacement converters

Detailed Description

This Walker catalytic converter uses a specific-fit layout with a stainless steel housing and ceramic substrate to match the original exhaust configuration more closely. The 84373 is listed for Nissan Sentra models from 2013-2019, with fitment notes identifying CARB Executive Order D-182-73 for 2013-2017 applications and direct-fit installation characteristics. The part number 84373 is also associated with Walker CalCat replacement coverage for OBDII and non-OBD vehicles where applicable.

Walker CalCat is the product line for CARB-compliant replacement converters, built to provide an OE-style fit and emissions-focused application coverage. For buyers searching for a Nissan Sentra catalytic converter or Walker 84373 replacement, this unit is positioned as a direct-fit solution for regulated exhaust repair.

What It Is Used For

• Replacing a failed or restricted catalytic converter
• Restoring exhaust flow after converter damage or contamination
• Addressing emissions-related fault conditions tied to converter efficiency
• Repairing a CARB-regulated exhaust system with a direct-fit unit

Installation Notes

Fitment is specific to listed Nissan Sentra applications. The fitment notes call for exhaust gasket replacement and identify additional parts 31364 and 31372 as needed to complete installation on certain applications. Mounting hardware is not included. Verify the vehicle’s emissions requirements, engine family information, and exhaust configuration before installation.

Quality Assurance

Walker states that CalCat converters are designed, tested, and validated to meet CARB standards. This part number 84373 is CARB certified and built as a direct-fit replacement for the listed Nissan Sentra applications.