Cummins ISC, Fan Clutch/Hubs, (GOOD USED) Cummins ISM ISC Horton Fan Clutch Part # 989853, 601869, Drivemaster PolarExtreme 989853 Fan Clutch For Sale, Horton OEM Part # 989853, Horton Service Part # 999853, Horton New Service Part # 799853-2, 799853 2, 7998532, Bracket/Mounting Part # 601869, Fits 2007 Cummins ISC , Serial # 5645869, Viscous, Stock # 7178 | Tested & Inspected!