Walker 245-1131 Mass Air Flow Sensor

Walker Mass Air Flow Assembly 245-1131

Walker Mass Air Flow Assembly 245-1131 is a direct-fit engine sensor assembly for select Chevrolet Express and GMC Savana applications. It is built with a female 5-terminal connector and includes the housing, making it a practical replacement for vehicles that need accurate airflow measurement for engine management.

Walker Products has supplied fuel system and engine sensor components since 1946, with manufacturing and engineering support focused on meeting or exceeding OEM standards. The Walker Mass Air Flow Assembly line is built for accurate vehicle application coverage and dependable sensor replacement, including service for Chevrolet Express 1500, Express 2500, Express 3500, GMC Savana 1500, Savana 2500, and Savana 3500 platforms.

Key Features

• Mass air flow sensor assembly for emission control and engine management service
• Housing included for a complete assembly-style replacement
• Female connector with 5 terminals
• Direct application coverage for Chevrolet Express and GMC Savana vans
• Walker part number 245-1131 for catalog and cross-reference lookup

Vehicle Fitment

• Fits 2003-2014 Chevrolet Express 1500, N/A
• Fits 2003-2015 Chevrolet Express 2500, N/A
• Fits 2003-2015 Chevrolet Express 3500, N/A
• Fits 2003-2014 GMC Savana 1500, N/A
• Fits 2003-2015 GMC Savana 2500, N/A
• Fits 2003-2015 GMC Savana 3500, N/A
• Fits 2007 GMC Sierra 3500 Classic, N/A

What This Part Helps Address

• Rough idle caused by inaccurate airflow signal input
• Check engine light concerns related to mass air flow sensor performance
• Hesitation or poor throttle response during acceleration
• Fuel trim issues tied to incorrect air measurement
• Driveability problems on Chevrolet Express and GMC Savana vans

Installation Notes

Confirm connector style, terminal count, and housing configuration before installation. This assembly does not include mounting hardware. Verify the vehicle application by year, make, and model, and inspect the intake tract for contamination or leaks that can affect sensor readings. For best results, clear diagnostic trouble codes after replacement and confirm proper idle and throttle response.

Quality Assurance

Walker Products manufactures engine management components to meet or exceed OEM standards and specifications. The company supports production with in-house manufacturing, product management, engineering, and technical documentation, and operates as an ISO 9001/IATF16949 certified manufacturer. This part cross-references Delphi AF10058 for the same application.