SouthMarine Impeller 386084 18-3050 for Johnson Evinrude BRP OMC 8HP 9.9HP 15HP outboard motor water pump Brand Name: SouthMarine Height: 16.87mm External Impeller Overall Diameter: 37.65mm Internal Shaft Insert Diameter: 12.74mm Number of Blades: 6, Brass Hub, Net Weight: 18g