The T-H Marine Lower Unit Gear Lube Pump fits most outboard or stern drive with a 3/8"-3/16" drain screw and is good for use with 32 oz gear lube bottles.FeaturesLower Unit Gear Lube PumpFor Use with 32 oz Gear Lube BottlesFits Most Outboard or Stern Drive with a 3/8" - 3/16" Drain ScrewIncludes Yamaha / Tohatsu AdapterCombatable Outboard DrivesJohnson/EvinrudeYamahaNissanTohatsuHondaCombatable Stern DrivesOMCCobraVolvoPentaSX Includes metric adapter