Walker 245-1238 Mass Air Flow Sensor

Walker Mass Air Flow Assembly 245-1238

Walker Mass Air Flow Assembly 245-1238 is a direct-fit engine sensor assembly for air measurement and fuel control on select vehicles. It is built with a housing included and a 4-terminal female connector for the specified application.

Key Features

• Mass Air Flow Sensor assembly from Walker
• Housing included for application-specific replacement
• 4-terminal female connector
• Fits 2000-2003 Chevrolet Astra
• Walker 245-1238 for emission control and engine management service

Product Details

Walker Products has supplied fuel system and engine sensor components since 1946, with manufacturing and engineering support focused on meeting OEM standards and specifications. The Walker Mass Air Flow Assembly line is part of that engine management portfolio, and part number 245-1238 is listed for 2000-2003 Chevrolet Astra applications. This part cross-references Four Seasons 20974 for the same application.

Common Issues This Part Can Address

• Incorrect airflow signal to the engine control system
• Rough idle caused by inaccurate air measurement
• Poor throttle response related to sensor output errors
• Check engine light concerns tied to mass air flow performance
• Fuel trim problems from inconsistent intake air readings

Installation Notes

Verify connector style, terminal count, and housing configuration before installation. This assembly uses a female connector and 4 terminals, and the housing is included. Confirm vehicle year and application details for 2000, 2001, 2002, and 2003 Chevrolet Astra models before replacement.

Quality Assurance

Walker Products is an ISO 9001/IATF16949 certified manufacturer with in-house product management and engineering support. The brand states its components are produced to meet or exceed OEM standards and specifications. Part number 245-1238 is supported by Walker’s technical documentation and application data.