Hi Folks just replaced water pump,with kit off Ebay, make sure you get the kit with detachable impeller, my kit lasted 50mls and the oil/water seal with the small spring in it broke,the whole kit is useless if this small spring breaks,if the impeller is moulded on,you have to break it off too get the shaft out,basically destroying the water pump,if the impeller had been the screw on type, it would have been an easy job,by the way it's a Vespa GT 200L cheers.