Walker 14661 Catalytic Converter with Integrated Exhaust Manifold - Left

Walker EPA Direct-Fit Catalytic Manifold

Walker EPA Part Number 14661 is a premium direct-fit catalytic converter with integrated exhaust manifold for select Lexus GX470 and Toyota 4Runner applications. It is built for the left side and follows Federal / EPA direct-fit requirements for 2003-2004 vehicles.

Walker Ultra Direct-Fit Catalytic Converters are part of the EPA line, focused on OBDII-era import and domestic applications that need a direct replacement with emissions compliance in mind. This unit is engineered for a precise fit and includes the manifold-style design used on the original exhaust layout.

Key Features

• Part Number: 14661
• Premium grade catalytic converter with integrated exhaust manifold
• Federal / EPA direct-fit design
• ECO III catalyst type
• 8-bolt welded inlet and 2-bolt welded outlet
• One O2 sensor port
• Includes inlet gasket and outlet gasket
• Includes inlet hardware and outlet hardware
• Overall length: 28.000

Detailed Description

This Walker catalytic converter manifold is built for direct replacement on 2003-2004 Lexus GX470 and 2003-2004 Toyota 4Runner left-side applications. The integrated manifold design helps match the factory exhaust configuration, while the EPA direct-fit format supports a cleaner installation path for vehicles requiring a Federal emissions-compliant replacement. If you are searching for a Walker 14661 catalytic converter for Lexus GX470 or Toyota 4Runner left side, this part is matched to those listed applications.

Walker 14661 is a practical choice for owners replacing a worn or damaged catalytic converter manifold on the Lexus GX470 and Toyota 4Runner. The welded inlet and outlet connections, single O2 sensor port, and included gaskets and hardware details align with the original-style exhaust service needs for these vehicles.

What It Helps Address

• Failed catalytic converter efficiency codes
• Exhaust leaks at the manifold or flange connection
• Check engine light concerns related to emissions performance
• Damaged or corroded factory exhaust manifold assembly
• Replacement needs for a left-side Lexus GX470 or Toyota 4Runner exhaust manifold converter

Installation Notes and Tips

Verify left-side fitment before ordering. This part is listed for 2003-2004 Lexus GX470 and 2003-2004 Toyota 4Runner EPA applications only. Confirm the vehicle’s emissions configuration, O2 sensor location, and flange style against the original unit before installation. Because this is an integrated manifold design, inspect adjacent exhaust components, mounting surfaces, and sensor threads during service.

Quality Assurance

Walker’s EPA line is positioned for direct-fit replacement on OBDII vehicles, with application-specific engineering aimed at emissions compliance and factory-style fitment. Part Number 14661 is built to match the listed vehicle applications and exhaust configuration.