Gas cap seal for the most popular Italian cap of the 1960's and 70's. The gasket measures 40 X 60mm and is 4mm thick. These gas caps were used on Ducati singles, Guzzi Twins & singles, Bianchi, MV Agusta, Benelli, Motobi, Morini, Laverda, Etc... AIR02938GS$8.95