Star Brite Lower Unit Quart Pump Metal threaded fitting fits Mercruiser, OMC, Evinrude, Johnson, Honda (70-90hp), Volvo, Force and Gamefisher lower units. You will need adapter fitting ITEM: 28401 for Yamaha, Nissan, Tohatsu &amp; Honda Lower Units (2-50 hp). You will need adapter fitting ITEM: 28402 for Suzuki engines.