Parts Geek - For 1966 GMC PB3500 Van Fan Clutch 12662TWSJ. 1966 GMC PB3500 Van. Notes: Fan Clutch -- Standard Rotation; Optional Non-Thermal Fan Clutch. Ensure Proper FitTo confirm that this part fits your vehicle, enter your vehicle's Year, Make, Model, Trim and Engine in the Compatibility Table.
