Caliso 22020 Heavy Duty Thermal Fan Clutch Engine Cooling Replacement

The Caliso 22020 is a heavy duty thermal fan clutch designed as a direct-fit replacement for the original equipment engine cooling fan clutch. Heavy duty thermal fan clutches are engineered to handle higher airflow demands than standard-duty units, making them well suited for vehicles with larger fan blade pitch or elevated cooling requirements.

This thermal fan clutch uses a bi-metallic thermal spring mounted at the front of the unit to sense underhood temperatures and modulate fan engagement accordingly. When the engine is cold or running at normal operating temperature, the clutch partially disengages the fan to reduce parasitic drag, improve fuel economy, and lower noise. As engine heat rises, the clutch progressively engages, spinning the fan at a higher percentage of shaft speed to draw more airflow through the radiator.

Key Features:

• Heavy duty thermal design — locks up at a higher engagement percentage than standard-duty clutches for increased cooling capacity
• Temperature-responsive operation — bi-metallic spring automatically modulates fan speed based on underhood heat
• Direct OE replacement — engineered to match the fit, form, and function of the original equipment fan clutch
• Reduces parasitic drag — partially disengages at lower temperatures to improve fuel efficiency and reduce engine noise
• Cross-references — compatible with Hayden 2670, Hayden 2674, and OEM reference 16210-75100

The Caliso 22020 heavy duty thermal fan clutch is a reliable aftermarket solution for restoring proper engine cooling system performance when the original unit has worn out or failed.