Part Type: Engine Cooling Fan Clutch. 1981 Dodge W250 Standard Rotation; Optional Non-Thermal Fan Clutch;. 1991 Dodge W250 Engine: 5.2L V8; Standard Rotation; Optional Non-Thermal Fan Clutch;. 1990 Dodge W250 Engine: 5.2L V8; Standard Rotation; Optional Non-Thermal Fan Clutch;.