Porsche determined that after extended usage and time, fine hairline cracks could possibly appear on the flange of the fuel pump filter on affected vehicles. If this happens, a very small quantity of fuel might seep out causing a fuel odor. Authorized Porsche dealers will replace the fuel filter flange on affected vehicles at no charge. Replacement of the fuel filter flange is expected to take approximately one and a half hours. There are 50,145 affected vehicles.