For 1974-1988 Jeep J10 Engine Cooling Fan Clutch 4 Seasons. 1974 Jeep J10 Engine: 4.2L L6; Standard Rotation; Optional Non-Thermal Fan Clutch;. 1974 Jeep J10 Engine: 5.9L V8; Standard Rotation; Optional Non-Thermal Fan Clutch; w/o Heavy Duty Cooling;.
