HORTON CATERPILLAR C13, (GOOD USED/ TESTED) OEM Horton Fan Clutch off Caterpillar C13 Diesel Engine, for sale!!!! (TAKE A LOOK AT CHART IN PICTURES TO VERIFY THAT THIS FAN CLUTCH WORKS FOR YOU!!!!!) OEM P/N: 989899; Service P/N: 999899, 799899, 799899-2; Base P/N: 601702; Applic