Caliso 22399 Heavy Duty Thermal Fan Clutch, Aluminum Body

The Caliso 22399 is a heavy duty thermal fan clutch (also called a thermostatic engine cooling fan clutch) for engine cooling systems. A thermal fan clutch uses a temperature-sensing spring to control how fast the fan spins. The fan runs at reduced speed when the engine is cool. It locks up for stronger airflow through the radiator when underhood temperatures rise.

Key Features:

• CNC machined to exact OE specifications for fit and function
• All-aluminum body for efficient heat dissipation
• High quality heavy duty bearing packed with high-temperature moly grease
• Thermal (temperature-controlled) operation to help save engine power and reduce fan noise when full cooling is not needed
• General application, clutch specification and industry interchange information printed on the stock number label

This fan clutch is a direct replacement part for a worn or failed unit. It helps restore reliable engine cooling.