Oil seal 20x30x5mm -PIAGGIO- (used for water pump) Vespa GT 250 (ZAPM45102), Vespa GTS 250 (ZAPM45100, ZAPM45101), Vespa GTS 300 (ZAPM45200, ZAPM45202, ZAPMA3300), Vespa GTS HPE 300 (ZAPMA3600, ZAPMD310), Vespa GTS Super 125 (ZAPM45300, ZAPM45301), Vespa