ITACO Boat Engine Impeller for Yamaha 20HP 25HP 30HP 40HP 50HP Outboard motor 6H4-44352-02-00 6H4-44352-01-00 676-44352-01 18-3068 Aftermarket part: Brand ITACO Internal shaft insert /Hub Diameter : 15.87mm Outer /External impeller overall Diameter: 51.59mm Fit Yamaha part number: 6H4-44352-02 / 01 Estimated Time of Delivery from Singapore: 7-16 working days