1973-1979, 1983-1997 Ford F350 7.5L V8. 1977-1982 Ford F350 5.8L V8. 1977-1982 Ford F350 6.6L V8. Notes: Engine Cooling Fan Clutch. Notes:Standard Rotation Severe Duty Thermal Fan Clutch. Notes:Standard Rotation Severe Duty Thermal Fan Clutch; With AC.
