Part Type: Engine Cooling Fan Clutch. Notes: Reverse Rotation; Severe Duty Thermal Fan Clutch; w/ A/C;. Fan Clutch. Reverse Rotation Severe Duty Thermal Fan Clutch. Fan Clutch, Thermal. 1991 GMC Sonoma Engine: 4.3L V6; Reverse Rotation; Severe Duty Thermal Fan Clutch; w/ A/C;.
