Walker 83281 Catalytic Converter - Rear

Walker CalCat Direct-Fit Catalytic Converter

Walker CalCat Part Number 83281 is a direct-fit catalytic converter built for CARB-compliant replacement on select Scion xB applications. It is engineered for a precise OE-style fit and is designed, tested, and validated to meet California Air Resources Board standards.

The CalCat product line focuses on direct-fit emissions replacement for OBDII and non-OBD vehicles, with application-specific fitment and CARB Executive Order coverage where listed. This Walker CalCat catalytic converter is a fitment-specific solution for rear exhaust placement on 2008-2009 Scion xB models.

Key Features

• Walker CalCat direct-fit catalytic converter
• CARB certified for California and other CARB-requiring states
• Specific fit design for OE-style installation
• Round stainless steel body with ceramic substrate
• 2-bolt welded flange inlet and outlet
• Rear position application for select Scion xB models
• Walker Part Number 83281

Detailed Description

Walker 83281 is a catalytic converter for 2008-2009 Scion xB, rear. It uses a stainless steel body, ceramic substrate, and 2-bolt welded flange connections at both the inlet and outlet for a direct-fit exhaust replacement. The overall length is 41.75 inches, with a round body measuring 8 inches long and 4.125 inches in height and width.

This part is CARB certified and listed for 2008 Scion xB rear and 2009 Scion xB rear applications with the specified engine family numbers in the fitment notes. It is a specific-fit converter with no oxygen sensor port location and no air tube provision. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Is Used For

• Replacing a worn, damaged, or restricted rear catalytic converter
• Addressing emissions-related fault codes tied to converter efficiency
• Restoring exhaust flow in a CARB-regulated replacement application
• Correcting exhaust leaks at the converter flange connection points
• Servicing a direct-fit exhaust repair on a 2008-2009 Scion xB

Installation Notes and Tips

Compatible With 2008 Scion xB, rear, and 2009 Scion xB, rear. Additional parts are needed to complete installation: 31374 and 31357. Verify the engine family number and CARB Executive Order details before installation, and confirm the flange alignment and exhaust routing match the vehicle configuration.

Because this converter uses welded 2-bolt flanges and no oxygen sensor port location, transfer and sensor placement should be checked against the vehicle’s exhaust layout before assembly. Professional installation is recommended for proper sealing and emissions compliance.

Quality Assurance

Walker CalCat converters are designed, tested, and validated for CARB compliance and OE-style fitment. Part 83281 is built for regulated replacement use on the listed Scion xB applications and is backed by Walker’s application-specific emissions product engineering.