Part Type: Engine Cooling Fan Clutch. Notes: Standard Rotation; Severe Duty Thermal Fan Clutch; w/ 6 Bolt Mounting Holes; Marked NG or NF. Reverse Rotation Severe Duty Thermal Fan Clutch. Fan Clutch. 1990 Chevrolet C70 Engine: 7.0L V8; Standard Rotation; Severe Duty Thermal Fan Clutch; w/ 6 Bolt Mounting Holes; Marked NG or NF;.
