Part Type: Engine Cooling Fan Clutch. Notes: Reverse Rotation; Standard Duty Thermal Fan Clutch; w/ A/C;. Fan Clutch. Reverse Rotation Thermal Standard Duty Fan Clutch. Fan Clutch, Thermal. 1988 GMC Safari Engine: 2.5L L4; Reverse Rotation; Standard Duty Thermal Fan Clutch; w/ A/C;.