CRC Mass Air Flow Sensor Cleaner is the safe and effective alternative to "underground" methods of MAF sensor cleaning. Don't us aggressive chemicals like brake parts cleaners or carburetor cleaners on MAF sensors. These can cause serious damage to sensitive parts. Use CRC MAF Sensor Cleaner -- It's the right product for the job! It safely and easily cleans the MAF hotwires and electrical components without damage to the wires or plastic housing. Cleaning is simple, safe and fast. The whole job should take less than 10 minutes! Mass Air Flow Sensor Cleaner benefits and features:Safely cleans and protects MAF SensorsPlastic-safe and leaves no residueIncreases horsepowerDecreases hesitation and pingingImproves fuel economy and MPGReduces rough idleUse every time you clean or change your air filter