Has your Mustang's Air Conditioning System been sitting uncapped for a while? Chances are that moisture got inside and contaminated your A/C System. If this is the case You need to replace the A/C Accumulator, also referred to as the A/C Drier, in your system. LRS carries quality replacement Mustang A/C accumulators or Mustang A/C driers to help keep your Mustang A/C System functioning properly and in turn keep you cool during those hot summer drives.