Engine Cooling Fan Clutch 4 Seasons For 1988-1991 Chevrolet K2500

1988 Chevrolet K2500 Engine: 4.3L V6; Standard Rotation; Severe Duty Thermal Fan Clutch; Fan Mounting Holes are 5/16 In.;. 1988 Chevrolet K2500 Engine: 5.0L V8; Standard Rotation; Optional Duty Thermal Fan Clutch; Fan Mounting Holes are 5/16 In.;.