Lower Unit Quart Pump fits standard quart plastic bottles. Flexible hose to get to hard-to-reach fill plugs. Includes 8mm adapter. Metal threaded fitting fits Mercruiser, OMC, Evinrude, Johnson, Honda (70-90hp), Volvo, Force and Gamefisher lower units. Adapter fitting #28401 is needed for for Yamaha, Nissan, Tohatsu & Honda Lower Units (2-50 hp) or #28402 for Suzuki engines (sold separately).