Number of Blades: 6, Brass Hub, Net Weight: 41g Height: 12.72mm(1/2") External Impeller Overall Diameter: 68.46mm(2 11/16") Internal Shaft Insert Diameter: 11.01mm(7/16") Can't just rely on horsepower to judge, please check the dimension with your old one carefully, if you still can't confirm that, please consult us.

Applications(for Evinrude Johnson 2-stroke outboard motors ):

3HP 1952-1978

4HP 1969-1972

4HP 1973-1983 (For water pumps using 1 water tube ,110 gearcase)

5HP 1965-1968

5.5HP 1954-1964

6HP 1952-1978

7.5HP 1954-1958