It is designed for use with a 3/8-inch NPT (National Pipe Thread) oil drain port. The "3/8" in "3/8 NPT" does not refer to the outer diameter or inner diameter. So please carefully check the model before purchasing.Compatible With many Tecumseh engines as well as 16 ,18 HP Kohler enginesSize: 3/8 in. Npt drain port 14 in. Overall LengthOur hoses are under normal operating pressure of 400psi and explosion pressure of 1700 PSIChanging your engine oil easy, prevents getting oil everywhere.You will receive two bule Oil Changing HosesSpecial reminder: When installing, use a wrench to prevent the oil pipe joint from breaking.
