Athena head gasket Athena is Original Equipment Manufacturer (since 1973) leader in Italian motorcycle production and many other brands. Seals are produced according to European quality standards (ISO 9001, ISO TS 16949, ISO 14001) and are therefore under constant quality control. Consistent quality is guaranteed. Athena used to make her poems only OE tested and certified raw materials. – Attention: gasket is reduced to 0.45 mm thick