Walker 81843 Catalytic Converter with Integrated Exhaust Manifold - Front or Front Left

CARB-Compliant Exhaust Manifold Converter

Walker CalCat Part Number 81843 is a catalytic converter with an integrated exhaust manifold built for CARB-regulated applications. It is designed and validated for OE-style fitment on select Toyota and Lexus vehicles, including Toyota Camry, Toyota Avalon, Toyota Solara, and Lexus ES300 applications from 1998-2004.

Key Features

• CARB certified with Executive Order D-182-66 for approved replacement use in California and other CARB-compliant states
• Integrated exhaust manifold design for a direct replacement layout
• Stainless steel converter body for corrosion resistance
• Ceramic substrate material for emissions control performance
• 6-bolt welded flange inlet and 2-bolt welded flange outlet
• Pre-catalyst oxygen sensor location
• Includes front gasket for the listed applications
• OE-style fit for front-left or front mounting positions, depending on vehicle

Product Details

The Walker CalCat line is built for emissions-focused repairs where CARB compliance matters. This catalytic converter manifold uses a stainless steel housing with a ceramic substrate and is engineered to match the original exhaust layout on the listed Toyota and Lexus models. Part number 81843 is a direct-fit replacement for front-left and front positions across the covered years, helping restore proper exhaust flow and emissions system function while maintaining the required CARB certification.

This part cross-references no additional part numbers in the provided data.

Common Repair Applications

• Failed catalytic converter emissions test
• Check engine light related to catalyst efficiency
• Cracked or leaking exhaust manifold converter assembly
• Rust or corrosion at the manifold or flange connections
• Replacement for a CARB-regulated front exhaust converter on Toyota Camry, Avalon, Solara, or Lexus ES300

Installation Notes

• Compatible With 2004 Toyota Avalon, Front Left
• Compatible With 2003 Toyota Avalon, Front Left
• Compatible With 2003 Toyota Solara, Front Left
• Compatible With 2002 Toyota Avalon, Front Left
• Compatible With 2002 Toyota Solara, Front Left
• Compatible With 2001 Lexus ES300, Front
• Compatible With 2001 Toyota Avalon, Front Left
• Compatible With 2001 Toyota Camry, Front Left
• Compatible With 2001 Toyota Solara, Front Left
• Compatible With 2000 Lexus ES300, Front
• Compatible With 2000 Toyota Avalon, Front Left
• Compatible With 2000 Toyota Camry, Front Left
• Compatible With 2000 Toyota Solara, Front Left
• Compatible With 1999 Lexus ES300, Front
• Compatible With 1999 Toyota Avalon, Front Left
• Compatible With 1999 Toyota Camry, Front Left
• Compatible With 1999 Toyota Solara, Front Left
• Compatible With 1998 Lexus ES300, Front
• Compatible With 1998 Toyota Avalon, Front Left
• Compatible With 1998 Toyota Camry, Front Left

Verify engine family number and emissions label details before installation, since CARB applications are tied to specific vehicle configurations. Additional part 31332 is listed as needed to complete installation for the covered applications.

Quality Assurance

Walker CalCat converters are designed, tested, and validated to meet CARB standards and deliver a precise OE-style fit for the listed applications. Part number 81843 is certified under CARB Executive Order D-182-66.