Boat Engine Impeller 19210-ZW9-013 19210-ZW9-003 18-3100 for Honda 4-stroke Outboard Motors Number of Blades: 6, Net Weight: 10g Plastic Hub Height: 14.77mm External Impeller Overall Diameter: 45.04mm Internal Shaft Insert Diameter: 13.35mm A Overall Diameter: 45.04 mm B Height: 14.47 mm C Shaft Diameter: 13.35 mm Net Weight : 10 g Number of Blades: 6 Plastic Hub Material: Neoprene Use: Cooling Systems (Water) Condition: New All parts are available in stock, we can ship it out within 1-2 business days! Installation Instructions: Lubricate with silicone grease, glycerine or dish soap when installing. (Not included).