SEI MARINE PRODUCTS- Mercury Mariner Force Impeller 47-85089 10 25 30 35 40 45 50HP 2 Stroke 4 Stroke This impeller replaces OE#: 47-85089 10 and fits 25-50 HP 2 stroke and 4 stroke Mercury, Mariner, and Force outboard lower units from 1997-2006.