The CRC Mass Air Flow Sensor Cleaner, No. 05110, is a precision cleaner specifically developed to clean sensitive components in MAF sensors without damaging or degrading plastic or painted surfaces. Throttle body, carburetor or brake parts cleaners can be damaging to plastic, which most MAF sensors are housed in today. Regularly using MAF Sensor Cleaner can restore horsepower, reduce rough idle, decrease hesitation and pinging and improve gas mileage. according to the company.