Caliso 22021 Heavy Duty Thermal Fan Clutch

The Caliso 22021 is a heavy duty thermal fan clutch engineered to restore proper engine cooling performance. As a direct-fit replacement for the original equipment fan clutch, it uses a bi-metallic thermal spring to sense underhood temperatures and engage or disengage the cooling fan accordingly — spinning the fan at full speed when heat demands it and backing off when the engine reaches normal operating temperature, reducing parasitic drag and unnecessary noise.

Key Features:

• Heavy duty thermal design — engages the fan at 80–90% of water pump shaft speed for maximum airflow when needed
• Temperature-responsive operation — bi-metal spring automatically modulates fan engagement based on underhood heat
• Direct OE replacement — designed to match original equipment fit and mounting specifications
• Durable construction — built to withstand the heat cycles and vibration demands of everyday driving
• Improved cooling efficiency — helps prevent engine overheating while reducing unnecessary fan drag at highway speeds

Cross-reference part numbers include Hayden 2671, Toyota 08921-04950, and Toyota 16210-62030. This heavy duty fan clutch is a reliable aftermarket solution for restoring your cooling system to proper factory function.