Walker 54788 Catalytic Converter

Walker EPA 54788 Catalytic Converter

Walker EPA 54788 is a direct-fit catalytic converter for select 2006-2008 Lexus RX400h and 2006-2007 Toyota Highlander applications. It is built with a stainless steel body, ceramic substrate, and OE-style flange and pipe connections for a precise exhaust replacement.

Key Features

• Direct-fit catalytic converter for specific vehicle applications
• Stainless steel body with round housing
• Ceramic substrate material
• 2-bolt welded flange inlet and pipe connection outlet
• Overall length: 46 inches
• Inlet diameter: 2.5 inches; outlet inside diameter: 2.125 inches
• EPA-compliant design for federal emissions applications
• Walker EPA 54788 cross-references AP Exhaust 7505 and Eastern Catalytic 40970 for the same application

Product Details

Walker EPA 54788 is part of the Walker Ultra Direct-Fit Catalytic Converter line, which focuses on OE-style fitment for import and domestic OBDII vehicles. This unit is designed for the 2006-2008 Lexus RX400h and 2006-2007 Toyota Highlander, with fitment notes calling for Muffler 55605 to complete installation and gasket 31639 recommended. The converter is not CARB certified and is not legal for sale or use in California and other CARB-compliant states.

For buyers searching for a 2006 Toyota Highlander catalytic converter, a 2007 Toyota Highlander exhaust replacement, or a 2006-2008 Lexus RX400h direct-fit converter, part number 54788 provides a specific-fit solution with the correct inlet and outlet sizing for the listed vehicles.

What It Helps Address

• Failed or inefficient catalytic converter performance
• Exhaust restriction caused by a worn converter
• Check engine light concerns related to emissions system faults
• Exhaust leaks at the converter connection points when paired with proper gaskets
• Replacement needs for federal-emissions-equipped Lexus RX400h and Toyota Highlander models

Installation Notes

• Fits 2006-2008 Lexus RX400h, N/A
• Fits 2006-2007 Toyota Highlander, N/A
• Requires Muffler 55605 to complete installation
• Exhaust gasket is recommended
• Additional part needed to complete installation: 31639
• Mounting hardware is not included
• Verify emissions compliance before purchase and installation

Quality Assurance

Walker EPA 54788 is engineered to meet EPA standards for the listed federal-emissions applications. Its direct-fit design, stainless steel construction, and ceramic substrate support consistent replacement quality for the specified Lexus RX400h and Toyota Highlander fitments.