✡️【Replace】For Johnson Evinrude BRP OMC Water Pump Impeller ✡️【Size】Height: 12.72mm(1/2") External Impeller Overall Diameter: 68.46mm(2 11/16") Internal Shaft Insert Diameter: 11.01mm(7/16") ✡️【Service】Please refer the products detials page or contact our customer service team For specific ✡️【Part Number】277181 434424 777819 18-3001 9-45216-10 9-45216 ✡️【Models】3HP(1952-1978) 4HP(1969-1972) 4HP(1973-1983) 5HP(1965-1968) 5.5HP(1954-1964) 6HP(1952-1978) 7.5HP(1954-1958)