Part Type: Engine Cooling Fan Clutch. Compatible Years: 1985 1986. 1985 Chevrolet K20 Suburban Engine: 5.0L V8; Standard Rotation; Optional Standard Duty Thermal Fan Clutch;. 1986 Chevrolet K20 Suburban Engine: 5.0L V8; Standard Rotation; Optional Standard Duty Thermal Fan Clutch;.