Sierra Impeller 18-3017-10 Fits Mercury

Replaces: 47-89984, 47-89984T4, 47-30221, 47-65960
For all #1, R, MR, Alpha Units thru S/N D494568. Also for raw water pump on: 190 IB S/N 1564539-1720903 225 IB S/N 1539620-2278646