Walker 84383 Catalytic Converter - Left

Overview

Walker CalCat 84383 is a direct-fit catalytic converter built for emissions-compliant replacement on select full-size Ford, Lincoln, and Mercury applications. It is CARB certified and engineered for an OE-style fit, making it a practical choice for restoring exhaust function while meeting California standards.

This part number 84383 is part of the Walker CalCat line, which focuses on direct-fit catalytic converters for OBDII and non-OBD vehicles. For buyers searching for a catalytic converter for Ford Crown Victoria, Lincoln Town Car, or Mercury Grand Marquis, this unit matches the listed fitment and emissions requirements.

Key Features

• CARB certified for regulated emissions applications.
• Direct-fit design for a precise OE-style installation.
• Stainless steel body with a ceramic substrate.
• Standard oval body shape with welded flange outlet.
• Post-catalyst oxygen sensor location.
• Walker CalCat 84383 for select emissions-compliant replacements.

Product Details

The Walker CalCat 84383 catalytic converter uses a stainless steel housing and ceramic substrate to support emissions control in the exhaust system. Its specific inlet and outlet flange design is intended to match the listed applications, while the CARB Executive Order coverage supports legal use in California and other states that require CARB-compliant replacement converters. This part number 84383 is listed for 2004-2011 Ford Crown Victoria, 2004-2011 Lincoln Town Car, and 2004-2011 Mercury Grand Marquis applications in the specified left-side position.

This part cross-references Monroe Shocks & Struts (e.g., 5411010) for the same application.

What It Helps Address

• Failed catalytic converter emissions testing.
• Check engine light concerns related to catalyst efficiency.
• Restricted exhaust flow caused by a worn converter.
• Need for a CARB-compliant replacement converter.
• OE-style fitment requirements on the exhaust system.

Installation Notes

Fitment is specific, so confirm the vehicle year, make, model, and left-side application before ordering. The product notes indicate additional part 31336 is needed to complete installation, and the converter uses a spherical flare loose flange inlet with a 2-bolt welded flange outlet. Review local emissions regulations and verify the engine family number listed for your vehicle before installation.

Quality Assurance

Walker states that CalCat direct-fit catalytic converters are designed, tested, and validated for compliance with CARB standards. The CalCat line is built for direct-fit replacement on emissions-controlled vehicles, with coverage for both OBDII and non-OBD applications.