Walker 245-1123 Mass Air Flow Sensor

Walker Mass Air Flow Assembly 245-1123

Walker Mass Air Flow Assembly 245-1123 is a direct-fit mass air flow sensor assembly for select Mercedes-Benz applications. It is built with a 5-terminal female connector and includes the housing, making it a practical replacement for drivability and air metering service on V8 and AMG models.

Walker Products has supplied fuel system and engine management components since 1946, with manufacturing and engineering support focused on OE-level specifications. The Walker Mass Air Flow Assembly line is designed for accurate vehicle application coverage and dependable sensor replacement, including Mercedes-Benz SLK55 AMG, G55 AMG, ML500, E500, and related models.

Key Features

• Mass air flow sensor assembly for emission control and engine management service
• Housing included for a complete assembly-style replacement
• 5-terminal female connector
• Fits select Mercedes-Benz models from 1998-2010
• Walker part number 245-1123 for catalog and cross-reference lookup

Vehicle Fitment

• Fits 2005-2010 Mercedes-Benz SLK55 AMG, N/A
• Fits 2003-2009 Mercedes-Benz G55 AMG, N/A
• Fits 2002-2008 Mercedes-Benz G500, N/A
• Fits 2002-2007 Mercedes-Benz ML500, N/A
• Fits 2006-2007 Mercedes-Benz R500, N/A
• Fits 2005-2006 Mercedes-Benz C55 AMG, N/A
• Fits 2000-2006 Mercedes-Benz CL500, N/A
• Fits 2003-2006 Mercedes-Benz CLK500, N/A
• Fits 2001-2006 Mercedes-Benz CLK55 AMG, N/A
• Fits 2006 Mercedes-Benz CLS500, N/A
• Fits 2003-2006 Mercedes-Benz E500, N/A
• Fits 1999-2006 Mercedes-Benz E55 AMG, N/A
• Fits 2000-2006 Mercedes-Benz S430, N/A
• Fits 2000-2006 Mercedes-Benz S500, N/A
• Fits 1999-2006 Mercedes-Benz SL500, N/A
• Fits 2003-2004 Mercedes-Benz CL55 AMG, N/A
• Fits 2004 Mercedes-Benz E320, N/A
• Fits 1999-2003 Mercedes-Benz CLK430, N/A
• Fits 2000-2003 Mercedes-Benz ML55 AMG, N/A
• Fits 2001-2002 Mercedes-Benz CL55 AMG, N/A
• Fits 2001-2002 Mercedes-Benz CL600, N/A
• Fits 1998-2002 Mercedes-Benz E430, N/A
• Fits 2001-2002 Mercedes-Benz S55 AMG, N/A
• Fits 2001-2002 Mercedes-Benz S600, N/A
• Fits 1999-2001 Mercedes-Benz ML430, N/A
• Fits 1998-2000 Mercedes-Benz C43 AMG, N/A

What It Helps Address

• Incorrect air metering readings that affect fuel delivery
• Rough idle or hesitation during acceleration
• Reduced engine performance from a failing MAF sensor
• Check engine light concerns related to airflow measurement
• Driveability issues on Mercedes-Benz SLK55 AMG, G55 AMG, and E500 applications

Installation Notes

Verify connector style, terminal count, and housing configuration before installation. This assembly uses a 5-terminal female connector and includes the housing; mounting hardware is not included. Confirm the vehicle application against the part number 245-1123 and the listed Mercedes-Benz fitment before replacing the sensor.

Quality Assurance

Walker Products has a long history in fuel system and engine sensor manufacturing and supports its parts with in-house product management, engineering, and technical documentation. The company is ISO 9001 and IATF 16949 certified, with products manufactured to meet or exceed OEM standards and specifications. This part cross-references Gates (e.g., 19814) for the same application.