Cummins ISC, Fan Clutch/Hubs, (GOOD USED) Horton Cummins ISC Fan Clutch For Sale, Part # 79A9134, Horton OEM Part # 98A9134, Horton Service # 79A9134, Bracket Part # 601557, WF1, 8F23, Pulley Part # 601521, WF2, 2H23, Also Fits Cummins ISL, Fits 2003-2005, Serial # 8423539, Viscous, Stock # 6936 | Tested & Inspected!