Walker 245-1577 Mass Air Flow Sensor

Walker Sensor Only Mass Air Flow Sensor

Walker 245-1577 is a sensor-only mass air flow sensor for select Chevrolet and GMC applications. It is built as a new, tested replacement sensor with fit, form, and function verification before release.

Key Features

• Sensor-only design for a faster, more economical MAF repair
• Black housing color with 1 rectangle connector
• Male connector with 8 terminals and pin-style terminals
• 2 mounting holes for direct replacement fitment
• No housing included
• No mounting hardware included
• Programmed and tested before sale
• Built with OEM-quality components and custom circuit board programming

Product Details

Walker Products Sensor Only line focuses on replacement MAF sensors without the housing assembly. That makes Walker 245-1577 a practical choice when the original housing is in good condition and only the sensing element needs replacement. Walker calibrates these sensors to meet OE fuel trim targets and verifies performance through production testing and on-vehicle validation. Part number 245-1577 is also cross-referenced to GM 22951817 and 23324767 for the same application.

Compatible With Chevrolet Silverado 2500 HD, Chevrolet Silverado 3500 HD, GMC Sierra 2500 HD, GMC Sierra 3500 HD, Chevrolet Colorado, Chevrolet Express 2500, Chevrolet Express 3500, GMC Canyon, GMC Savana 2500, GMC Savana 3500, Chevrolet Cheyenne, Chevrolet Equinox, Chevrolet Volt, GMC Terrain, Chevrolet Silverado 2500, and Chevrolet S10. This Walker mass air flow sensor is a direct-fit replacement for many GM trucks, vans, and crossovers that use a sensor-only design.

Common Problems This Part Can Address

• Rough idle caused by inaccurate airflow readings
• Check engine light related to MAF sensor performance
• Hesitation or poor throttle response
• Incorrect fuel trim readings
• Reduced drivability from a failing original sensor

Installation Notes

Before installation, inspect the air intake tract, connector, and sensor mounting area for dirt, oil, or damage. Because this is a sensor-only replacement, confirm that the existing housing and air tubes are clean and serviceable. Handle the sensing element carefully to avoid contamination, and verify connector alignment before securing the sensor.

Quality Assurance

Walker Products has supplied fuel system components since 1946 and is an ISO 9001 and IATF 16949 certified manufacturer. Many Walker MAF sensors are engineered and built in the USA, and each unit is programmed and tested for fit, form, and function before release.