Part Type: Engine Cooling Fan Clutch. Manufacturer: Four Seasons. Notes: Notes: Counter Clockwise; Severe Duty Thermal Fan Clutch; w/ AC. Reverse Rotation Severe Duty Thermal Fan Clutch. Fan Clutch. 1988 Chevrolet S10 Blazer Engine: 4.3L V6; Counter Clockwise; Severe Duty Thermal Fan Clutch; w/ AC;.