1997-1998 GMC C6500 Topkick 7.0L V8. 1997-1998 GMC C6500 Topkick 6.0L V8. Notes: Engine Cooling Fan Clutch. Includes: Fan Mounting Hardware. Ensure Proper FitTo confirm that this part fits your vehicle, enter your vehicle's Year, Make, Model, Trim and Engine in the Compatibility Table.