Feature●This impeller replaces OE#: 0775521, includes the key, and fits 28 HP (1962-1964), 30 HP (1956), 33 HP (1965-1970), 35 HP (1957-1958), and 40 HP (1971-1973) Evinrude Johnson outboard lower units.Description This impeller replaces OE#: 0775521, includes the key, and fits 28 HP (1962-1964), 30 HP (1956), 33 HP (1965-1970), 35 HP (1957-1958), and 40 HP (1971-1973) Evinrude Johnson outboard lower units.