285633 Hose, Suction side lower hose, used on the Kohler 30RZ62, 30kw generator with the 2300 series Hercules engin.285633 Lower Radiator hose. This hose goes from the radiator to the water pump, suction side. This hose is used on the Kohler 30kw generator with the 2300 series Hercules engine. Internal diameter of this hose is 1 15 16" at both ends, 2 90 degree turns in this hose assembly and there is a internal spring wire to prevent collapse. This hose is very similar to 286912 00 the Hercules version of this hose.