Walker 245-1149 Mass Air Flow Sensor

Walker Mass Air Flow Assembly for GM Applications

Walker Mass Air Flow Assembly Part Number 245-1149 is a direct-fit mass air flow sensor assembly for select Chevrolet, GMC, Cadillac, and Pontiac vehicles. It is built with a housing included and a 5-terminal female connector to support accurate airflow signal delivery for engine management systems.

Compatible With 2007-2009 Chevrolet Silverado 1500, 2007-2009 Chevrolet Tahoe, and 2007-2009 GMC Sierra 1500 applications, this assembly also covers additional GM truck and performance models through 2017. The Walker 245-1149 is a practical replacement when diagnosing drivability or fuel-trim concerns tied to airflow measurement.

Walker Mass Air Flow Assembly Features

• Mass air flow sensor assembly for emission control and engine management systems
• Housing included for a complete assembly-style replacement
• 5-terminal female connector
• Built for select Chevrolet, GMC, Cadillac, and Pontiac fitments
• Walker Mass Air Flow Assembly line backed by Walker Products engineering and technical support
• Part Number 245-1149 for catalog and service matching

Product Details

Walker Products has supplied fuel system and engine sensor components since 1946, with manufacturing and product support focused on meeting or exceeding OEM standards and specifications. The Walker Mass Air Flow Assembly line is part of that engine management portfolio, giving technicians and vehicle owners a replacement option for airflow sensing on GM platforms such as Chevrolet Silverado, Tahoe, Suburban, Avalanche, and GMC Sierra and Yukon models. This part cross-references Delphi AF10058 for the same application.

Use Part Number 245-1149 when you need a mass air flow sensor assembly that matches the vehicle’s connector style and housing configuration. It is also referenced in aftermarket catalogs alongside Walker 245-1149 for application lookup and service identification.

What This Part Helps Address

• Rough idle caused by inaccurate airflow readings
• Hesitation or stumble during acceleration
• Check engine light related to mass air flow sensor performance
• Poor fuel delivery calculations from the engine control system
• Driveability issues on Chevrolet Silverado, Tahoe, and GMC Sierra applications

Installation Notes and Tips

Verify connector style, terminal count, and housing configuration before installation. This assembly uses a female connector and includes the housing, while mounting hardware is not included. Confirm the vehicle application against the fitment list for 2007-2009 Chevrolet Silverado 1500, 2007-2009 GMC Sierra 1500, 2007-2009 Chevrolet Tahoe, 2007-2009 GMC Yukon, 2008-2009 Pontiac G8, and other listed GM models.

Quality Assurance

Walker Products is ISO 9001 and IATF 16949 certified and supports its parts with in-house manufacturing, engineering, product management, and technical support. The 245-1149 mass air flow assembly is produced to align with OEM-level standards and application accuracy for the listed vehicles.