The lower unit standard pump fits quart oil bottles. Flexible hose gets into hard to reach locations. Threaded (3/8-16) fitting fits Mercruiser, OMC, Evinrude, Johnson, Honda (70 hp and up), Volvo, Force, Mercury (US Origin Models) and Gamefisher lower units. Includes Yamaha adapter (8-1.25) fitting for Mercury (Japanese origin models), Yamaha, Nissan, Tohatsu, Honda.