Impeller 378891 775521 18-3006 for Johnson Evinrude OMC BRP 25HP 28HP 30HP 33HP 35HP 40HP Outboard Motor Water Pump Number of Blades: 6, Brass Hub Height/width: 13.01mm External Impeller Overall Diameter: 69.38mm Internal Shaft Insert Diameter: 15.83mm Net Weight: 34g A External Impeller Overall Diameter: 69.38 mm B Height: 13.01 mm C Internal Shaft Insert Diameter : 15.83 mm Number of Blades: 6 Net Weight: 34 g Brass Hub Condition: New All parts are available in stock, we can ship it out within 1-2 business days!