Buick Regal Air Flow Sensor 20787043 Precision MAF

Buick LaCrosse air flow sensor (OEM: 20787043) directly replaces the original part without wiring changes, accurately measuring intake air mass and transmitting to the ECU to adjust fuel injection and ignition. Fits all variants of the LaCrosse with 2.0L and 2.4L engines; easy installation. Replacing can resolve rough idle, sluggish acceleration, high fuel consumption, and cold-start jitter. If the vehicle exhibits dullness, exhaust black smoke, or the fault light stays on, this is usually due to sensor aging; timely replacement restores performance.