Mass AIR Flow Sensor 1L2F12B579BA A precision Mass Air Flow (MAF) sensor built to the specifications of part number 1L2F12B579BA. This sensor measures the volume and density of incoming air and provides the engine control unit (ECU) with the data needed to maintain the correct air/fuel ratio. Replacing a worn or faulty MAF sensor restores accurate airflow measurement, stabilizes idle, improves throttle response, and helps optimize fuel economy and emissions. Key benefits Restores correct air/fuel metering to recover engine performance and drivability. Reduces symptoms of a failing MAF sensor: rough idle, hesitation, poor acceleration, and decreased fuel economy. Direct replacement designed to match the specifications of part number 1L2F12B579BA for straightforward fitment. Reliable sensor output helps the ECU make precise fuel and timing adjustments. Core attributes Functionality: Mass Air Flow sensing for engine air intake measurement and ECU feedback. Model/Part number: 1L2F12B579BA (use this number to confirm compatibility). Fitment: Directreplacement design intended for vehicles that require part number 1L2F12B579BA; connects to the existing wiring harness and mounting points. Construction: Precision sensing element housed in a compact unit with standard electrical connector compatible with the specified part number. Performance: Provides accurate, repeatable airflow readings to support proper fuel delivery and engine management. Use cases / applications Replacement during routine : Swap the worn or contaminated MAF sensor with part number 1L2F12B579BA to clear drivability issues and diagnostic trouble codes related to airflow measurement. Diagnostic testing and troubleshooting: Install this sensor when diagnosing intermittent stalling, poor idle quality, or sudden drops in fuel economy that point to faulty airflow readings. Preventative maintenance: a degraded MAF sensor as part of an engine tuneup to maintain consistent engine performance and emissions control. Installation notes Designed as a direct replacement for the specified part number 1L2F12B579BA; verify part number and connector type before installation. Mounts in the air intake duct and connects to the vehicle wiring harness. Installation should follow manufacturer torque and connector engagement recommendations. For results, have installation and any postinstallation diagnostics performed by a qualified technician. Parts information Product: Mass AIR Flow Sensor Part number: 1L2F12B579BA Confirm compatibility by matching this part number to your vehicle's required MAF sensor specification before .