This is a GMC Topkick Chevy Kodiak C4500 C5500 Fan Clutch GM Part# 94670096. New GMC Fan Clutch GM Part # 94670096. AC Delco Part # 15-40115. This is for 03-09 C4500/ C5500 Topkicks and Chevy Kodiaks with 8.1 GAS (496ci) motors. May fit others and fitment is only a reference. Please be sure it fits before buying. GM list price is $177.32. Fan Blade is also listed in a separate auction. These are NEW OEM GM surplus parts. Thanks for looking. Have a great day.