SouthMarine 47-803630T 47-F523065 18-3030 Impeller for Mercury/Mercruiser/Chrysler Motors/Force Chrysler 75HP 85HP 100HP 105HP 115HP 120HP 125HP 140HP Outboard motor Number of Blades: 6, Plastic Hub Height: 29.87mm External Impeller Overall Diameter: 57mm Internal Shaft Insert Diameter: 20.96mm Net Weight: 35g A External Impeller Overall Diameter: 57mm B Height: 29.87mm C Internal Shaft Insert Diameter: 20.96mm Net Weight: 35g Number of Blades: 6 Plastic Hub