Walker 54978 Catalytic Converter - Rear

Walker EPA Direct-Fit Catalytic Converter

Walker EPA 54978 is a specific-fit catalytic converter for select Hyundai Tiburon applications. It is built for OBDII vehicles and follows EPA standards, with a direct-fit layout that supports straightforward replacement on the correct emission setup.

Key Features

• Specific-fit catalytic converter for select applications
• EPA-compliant design for OBDII vehicles
• Stainless steel body with a ceramic substrate
• Round converter body with welded flange connections
• 2-bolt welded inlet and outlet flanges for direct-fit installation

Detailed Description

Walker 54978 is part of the EPA Ultra Direct-Fit line, which focuses on emission-system replacement parts built for proper fit and compliance on import and domestic OBDII vehicles. This converter uses a stainless steel housing and ceramic substrate, with a round body and 2-bolt welded flange connections at both ends. For Hyundai Tiburon rear exhaust applications, the fitment is specific and tied to the listed emission configuration. The part number 54978 is also cross-referenced to 642274 for the same application.

What It Helps Address

• Failed catalytic converter efficiency codes
• Exhaust emissions test failures
• Restricted exhaust flow from a worn converter
• Replacement needs after internal substrate damage
• Fitment issues when an exact application-specific converter is required

Installation Notes and Tips

Fits 2003-2008 Hyundai Tiburon, rear. Notes for this application include Fed. and Calif. emission models, with state-use restrictions listed for California and other CARB-compliant states. An exhaust gasket is recommended, and additional parts 31534 and 2 of 31309 are listed to complete installation. Verify flange style, outlet size, and emission requirements before installation.

Quality Assurance

Walker EPA 54978 is engineered to meet EPA standards and is intended for specific OBDII applications. The Ultra Direct-Fit line is positioned for direct replacement use where the listed fitment and emissions requirements match the vehicle.