Walker 81140 Catalytic Converter

CARB-Compliant Direct-Fit Converter

Walker CalCat 81140 is a direct-fit catalytic converter built for specific Honda applications from 1990-1993. It is CARB certified and designed for a precise OE-style fit, making it a practical replacement for emissions-related exhaust service on a Honda Accord or Honda Prelude.

The Walker CalCat line focuses on direct-fit replacement converters for OBDII and non-OBD vehicles, with CARB compliance validated for regulated markets. Part number 81140 is built with a stainless steel body, ceramic substrate, and welded 3-bolt flange connections for a factory-style exhaust interface.

Key Features

• Direct-fit catalytic converter for specific Honda applications
• CARB certified for use in California and other CARB-regulated states
• Stainless steel body construction
• Ceramic substrate material
• 3-bolt welded flange inlet and outlet
• Round body shape with OE-style dimensions
• Single-converter design for targeted exhaust replacement
• Walker CalCat 81140 part number for catalog matching

Fitment and Application

Compatible with 1990-1993 Honda Accord and 1992-1993 Honda Prelude. Fits 1990-1993 Honda Accord, N/A. Fits 1992-1993 Honda Prelude, N/A. This part cross-references Monroe Shocks & Struts (e.g., 3322624) for the same application.

Detailed Description

Walker CalCat 81140 is engineered as a direct replacement catalytic converter for Honda Accord and Honda Prelude models in the 1990-1993 range. The unit uses a ceramic substrate inside a stainless steel housing and connects through 3-bolt welded flanges at both the inlet and outlet. With an overall length of 13 inches and an outlet diameter of 1.78 inches, it is shaped for OE-style exhaust routing and fitment.

For buyers searching for a 1992 Honda Accord catalytic converter, a 1993 Honda Prelude catalytic converter, or a CARB-compliant replacement for a 1990-1993 Honda Accord, part number 81140 provides a direct-fit option built around the listed vehicle applications. The CalCat product line is positioned for regulated emissions replacement where CARB certification is required.

Common Replacement Reasons

• Failed emissions test or catalyst efficiency fault
• Rattling or damaged converter substrate
• Corrosion at the exhaust connection points
• Need for a CARB-certified replacement converter
• Restoring exhaust flow on a Honda Accord or Honda Prelude

Installation Notes

Additional parts are needed to complete installation: 31645 and 31383. Verify the vehicle year, engine/emissions configuration, and flange style before installation. Because this converter uses 3-bolt welded flanges and no oxygen sensor port location, confirm the existing exhaust layout matches the listed application before ordering or fitting.

Quality Assurance

Walker states that CalCat direct-fit catalytic converters are designed, tested, and validated for CARB compliance and OE-style fitment. Part number 81140 is CARB certified and carries Executive Order D-182-65 for the listed Honda applications.