yamaha 25a impeller

[spuddie1]

hi , can anyone help me find the correct impeller for my yamaha 25a outboard , its quite old but not sure of year - i bought part no ; 689-44532-02 but its the wrong one ( middle bore too big & little notch too small ) ,, the new part has very small numbers embossed on it - 11.5 , & old part has 6.2 ,, not sure if this relevant ,, hope someone can help !!! engine serial no; 05973 , thanks , john

[boats.net]

We don't have any parts listing on a 25A model, the oldest 25(25ELN) sold here in the USA used the 689-44352-02-00 impeller.
There was a 25ELG in 1988 that was a 3 cylinder oil injected model that used 6L2-44352-00-00 impeller but I don't the dimensions of it.