Walker 16883 Catalytic Converter - Rear

Walker EPA Ultra Direct-Fit Catalytic Converter

Walker EPA Ultra Direct-Fit Catalytic Converter Part Number 16883 is built for OBDII-equipped vehicles and engineered to meet EPA standards while maintaining direct-fit installation geometry. It is designed for the rear position on select Chevrolet Equinox and GMC Terrain applications, with fitment for Federal and California emission models where noted.

The Walker EPA Ultra line focuses on direct-fit replacement converters for import and domestic 1996-and-newer vehicles. This product line is aimed at restoring proper exhaust flow and emissions control with a fit that follows the original mounting layout.

Key Features

• Direct-fit catalytic converter for the rear exhaust position
• Stainless steel body construction for corrosion resistance
• Ceramic substrate material
• 4-bolt welded flange inlet and 2-bolt welded flange outlet
• Oxygen sensor locations before and after the catalyst
• Round body design with an overall length of 14.23 inches
• EPA-compliant design for approved applications
• Part Number 16883 for application matching and catalog lookup

Detailed Description

Walker 16883 is a direct-fit catalytic converter for 2012-2017 Chevrolet Equinox rear applications and 2012-2017 GMC Terrain rear applications. It uses a stainless steel housing, ceramic substrate, and welded flange connections to match the original exhaust layout on the listed vehicles. The converter is configured for pre- and post-catalyst oxygen sensor placement and is intended for firewall-mount rear installation on the specified emission packages.

For buyers searching for a 2012-2017 Chevrolet Equinox rear catalytic converter or a 2012-2017 GMC Terrain rear catalytic converter, Part Number 16883 provides a cataloged replacement option with direct-fit dimensions and EPA-oriented construction. This part cross-references 20910494 for the same application.

Common Problems This Part Can Address

• Failed emissions testing caused by a worn or inefficient rear catalytic converter
• Check engine light concerns related to catalyst efficiency codes
• Restricted exhaust flow from a deteriorated converter substrate
• Exhaust leaks at the converter flange connection points
• Replacement needs after corrosion or internal breakdown of the original unit

Installation Notes and Tips

• Compatible with 2012-2017 Chevrolet Equinox, rear, firewall mount, Federal and California emission models as listed.
• Compatible with 2012-2017 GMC Terrain, rear, firewall mount, Federal and California emission models as listed.
• Exhaust gasket is recommended for installation.
• Additional part 31367 is listed as needed to complete installation.
• Verify emission certification requirements before purchase; this part is not CARB certified and is not legal for sale or use in California and other CARB-compliant states.

Quality Assurance

Walker EPA Ultra converters are built to meet EPA standards and are designed for direct-fit replacement on approved OBDII applications. Part Number 16883 is specified for the listed Chevrolet Equinox and GMC Terrain fitments and is intended to support proper emissions-system function when installed on the correct vehicle configuration.