For 1978-1986 Chevrolet C20 Engine Cooling Fan Clutch 4 Seasons 1979 1980 1981

1978 Chevrolet C20 Engine: 4.1L L6; Standard Rotation|Standard Duty Thermal Fan Clutch;. 1978 Chevrolet C20 Engine: 4.8L L6; Standard Rotation|Standard Duty Thermal Fan Clutch|w/o AC;. 1979 Chevrolet C20 Engine: 4.1L L6; Standard Rotation|Standard Duty Thermal Fan Clutch;.