Eastern Convertors 40909 Catalytic Converter - Left

Direct-Fit Catalytic Converter for Mercedes-Benz

Eastern Convertors 40909 is a direct-fit catalytic converter built for specific Mercedes-Benz applications with OE-style dimensions and undercar fitment. It uses ECO III catalyst technology and a Federal / EPA direct-fit design to support proper exhaust flow and emissions system function on the listed vehicles.

The DIRECT FIT product line focuses on exact-fit replacement parts for straightforward installation and consistent alignment. For this application, the converter is built to match OE dimensions and uses advanced manufacturing methods to help maintain fitment accuracy and efficient production.

Key Features

• Part number 40909
• ECO III catalyst type
• Federal / EPA direct-fit undercar design
• Built to OE dimensions for fitment accuracy
• 2-bolt spinner inlet and outlet connections
• 2 O2 sensor ports
• Overall length: 21.4375 in.
• Outlet hardware included; outlet gasket quantity listed as 1

Vehicle Fitment

• Fits 1998-2003 Mercedes-Benz CLK320, left undercar.
• Fits 1999-2003 Mercedes-Benz CLK430, left undercar.
• Fits 2001-2002 Mercedes-Benz CLK55 AMG, left undercar; single outlet.

Detailed Description

Eastern Convertors 40909 is a replacement catalytic converter for Mercedes-Benz CLK320, CLK430, and CLK55 AMG models in the listed left-side undercar applications. The converter is engineered with spinner-welded 2-bolt connections, two oxygen sensor ports, and a direct-fit layout to match the original exhaust routing on the vehicle. The NANO substrate chemistry is used to support efficient catalyst loading while keeping the part cost-conscious for repair work.

Use this part number 40909 when replacing a worn or restricted converter on a Mercedes-Benz CLK320 or Mercedes-Benz CLK430, or on a CLK55 AMG with the listed single-outlet configuration. The DIRECT FIT line is aimed at OE-style replacement work where correct dimensions and connection style matter for exhaust sealing and alignment.

Common Repair Uses

• Check engine light related to catalyst efficiency faults
• Exhaust restriction from a deteriorated converter substrate
• Exhaust leaks at the inlet or outlet connection points
• Failed emissions inspection on the listed Federal / EPA applications
• Noise or rattling caused by internal converter breakdown

Installation Notes

Verify the vehicle is one of the listed Mercedes-Benz applications before ordering. This converter uses a left-side undercar layout with 2-bolt spinner inlet and outlet connections, and the CLK55 AMG listing notes a single outlet. Confirm O2 sensor port placement and exhaust routing against the original part before installation. No inlet gasket or inlet hardware is listed; outlet hardware is listed as included.

Quality Assurance

Eastern Convertors uses automated workstations, spinner welding equipment, and high-speed production lines to build converters to exact OE dimensions and fitment targets. The brand’s manufacturing process is paired with NANO substrate chemistry to support efficient catalyst loading and consistent replacement performance.