Yanmar 124223-42092. Impeller
Fits: 2GM20F , 3GM30F , 1983-2005 freshwater cooled (antifreeze) models made in Japan. Will not fit 1997 and later European made. ( the serial number will start with E on the European models)
3HM , 3HMF , 1980-83
3HM35 , 3HM35F , 1983-1992
Diameter: 50.8mm (2")
Width: 22.1mm (7/8")
Shaft: 12.7mm (1/2")
6 Blades