1996 Chevrolet W4500 Tiltmaster Engine: 5.7L V8; Reverse Rotation|Severe Duty Thermal Fan Clutch;. Engine Cooling Fan Clutch. Reverse Rotation Severe Duty Thermal Fan Clutch. Fan Clutch /Thermal. IMPORTANT: To confirm that this part fits your vehicle, enter your vehicles Year, Make, Model, Trim and Engine in the Compatibility Table.