Eastern Convertors 40623 Catalytic Converter - Rear Left

Direct-Fit Catalytic Converter for Lexus and Toyota

Eastern Convertors 40623 is a Federal / EPA direct-fit undercar catalytic converter built for exact OE dimensions and fitment. It is engineered for the rear left position on select Lexus GX460, Lexus GX470, and Toyota 4Runner applications, with a standard catalyst and one O2 sensor port.

The DIRECT FIT product line focuses on OE-style replacement parts with precise fitment and efficient manufacturing. For buyers searching for a rear left catalytic converter for Lexus GX460, Lexus GX470, or Toyota 4Runner, part number 40623 provides a direct replacement format without requiring custom fabrication.

Key Features

• Federal / EPA direct-fit undercar catalytic converter
• Standard catalyst type
• Built to OE dimensions for consistent fitment
• 1 O2 sensor port
• 2-bolt welded inlet and outlet connections
• 1 inlet gasket and 1 outlet gasket specified
• Eastern Convertors DIRECT FIT line
• Part number 40623

Detailed Description

Eastern Convertors 40623 is a rear left catalytic converter for 2010-2020 Lexus GX460, 2005-2009 Lexus GX470, and 2005-2009 Toyota 4Runner applications. It is a Federal / EPA direct-fit undercar unit, making it a practical OE-style replacement for vehicles that require the rear left exhaust catalyst in the listed configurations. The converter uses advanced manufacturing methods, including automated production equipment and spinner welding, to maintain consistent dimensions and fitment. Its NANO substrate chemistry is used to support efficient catalyst loading and controlled production cost.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Problems This Part Can Address

• Failed catalytic converter efficiency codes
• Exhaust emissions test failure
• Rattling or damaged converter substrate
• Restricted exhaust flow from a worn converter
• Check engine light related to rear left catalyst performance

Installation Notes and Tips

• Fits 2010-2020 Lexus GX460, rear left.
• Fits 2005-2009 Lexus GX470, rear left.
• Fits 2005-2009 Toyota 4Runner, rear left.
• Verify Federal / EPA application before ordering; not for sale or use in CA, CO, ME, or NY vehicles with CA emissions.
• Confirm the vehicle uses the rear left undercar configuration and one O2 sensor port.
• Check flange style and gasket surfaces before installation.

Quality Assurance

Eastern Convertors builds this DIRECT FIT converter using OE-dimension manufacturing controls and substrate chemistry aimed at consistent performance and fitment. Part number 40623 is produced for direct replacement use in the listed Federal / EPA applications.