Walker 245-1666 Mass Air Flow Sensor

Walker 245-1666 Mass Air Flow Sensor

Walker 245-1666 is a sensor-only mass air flow sensor for select Cadillac CT6 applications. It is built as a new, programmed, and tested replacement sensor with a black housing, 4-pin terminal layout, and 1 oblong male connector for direct service on the vehicle.

Sensor Only Replacement

The Sensor Only line from Walker is focused on replacing the sensing element without the complete housing assembly. That makes it a practical choice when the original air duct and connector area are in good condition and you want a direct MAF sensor service part for the Cadillac CT6.

• Brand: Walker
• Part number: 245-1666
• Mass air flow sensor, sensor only design
• Black finish
• 4-wire, 4-terminal configuration
• 1 oblong male connector
• 2 mounting holes

Vehicle Fitment

Compatible with 2019-2020 Cadillac CT6, sensor only. This part number, Walker 245-1666, is listed for the Cadillac CT6 in 2019 and 2020 model years.

What This Part Helps Address

• Incorrect airflow signal to the engine control module
• Driveability issues related to contaminated or aging MAF sensing elements
• Fuel trim concerns caused by inaccurate air measurement
• Check engine light conditions tied to mass air flow sensor performance
• Rough idle or hesitation linked to airflow metering errors

Installation Notes

Inspect the air inlet tract, connector, and surrounding surfaces before installation. Walker notes that sensor-only replacement is often faster and more economical, while some applications call for a complete housing assembly if the connector air tubes are dirty or if the original housing condition could affect sensor performance. Handle the sensing element carefully to avoid contamination.

Quality Assurance

Walker Products supplies new, never-remanufactured MAF sensors that are programmed and tested for fit, form, and function before release. The company states that its mass air flow sensors are production-tested and verified with on-vehicle testing, and many high-demand parts are manufactured in the USA using OEM-quality components. Walker Products has supplied automotive fuel system components since 1946 and is ISO 9001 and IATF 16949 certified.