The replacement mass air flow sensor is made for select 2019-2025 Buick, Cadillac, Chevy and GMC applications. It measures the volume of air entering the engine so the engine computer can match fuel delivery to airflow; it installs into the existing housing.

Walker Products 245-1655 Mass Air Flow Sensor Features:

• Fits 2020-2024 Buick Encore GX, Cadillac CT4, XT5; 2021-2025 Buick Envision; 2019 Cadillac CT6; 2019-2024 Cadillac XT4; 2020-2023 Cadillac CT5, GMC Acadia
• Fits 2021-2024 Cadillac XT6, Chevy Trailblazer; 2020-2022 Chevy Blazer; 2023-2024 Chevy Equinox, GMC Terrain
• Engine coverage includes 1.3L I3, 1.5L I4, 2.0L I4, 2.7L I4 applications
• Male oblong electrical connector with 4 spade terminals
• Housing constructed of plastic
• 12 operating voltage
• 2 mounting holes
• Includes gasket or seal
• Mounting hardware and housing not included