The replacement mass air flow sensor is made for 2004-2006 Chevy Malibu and 2004 Pontiac Grand Prix. 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 245-2189 Mass Air Flow Sensor Features:

• Fits 2004-2006 Chevy Malibu; 2004 Pontiac Grand Prix
• Engine coverage includes 3.5L V6, 3.8L V6 applications
• Female electrical connector with 5 terminals
• Includes mounting hardware
• Housing not included