Mass Air Flow & MAP Sensor

Shop New OEM mass air flow (MAF) and manifold absolute pressure (MAP) sensors for GM vehicles. Our factory-original ACDelco sensors are sourced from GM surplus — the exact calibration curve, housing design, and connector configuration for your specific engine management system.

The MAF and MAP sensors are primary inputs to your engine's fuel injection and ignition timing calculation. An OEM sensor provides the exact output signal that your ECM's calibration was developed around — eliminating the fuel trim errors, rough idle, and misfire codes that commonly result from aftermarket sensor substitution.

Verify sensor part numbers against your engine's air induction system configuration. MAF sensors must match your air cleaner housing bore diameter exactly.