Caliso 22307 Heavy Duty Thermal Engine Cooling Fan Clutch

The Caliso 22307 is a heavy duty thermal engine cooling fan clutch designed as a direct OEM replacement. This thermal-style clutch uses a bi-metallic spring and silicone-based fluid to modulate fan speed in response to underhood air temperature, delivering maximum cooling airflow when the engine needs it most and disengaging when temperatures stabilize to reduce noise and improve fuel efficiency.

Key Features:

• Heavy duty thermal design — engages the fan at 70–90% of shaft speed for increased cooling capacity
• Disengages to 25–35% of shaft speed when cooling demand is low, reducing parasitic drag and cabin noise
• Temperature-responsive operation — bi-metallic spring senses radiator air temperature and automatically regulates the internal silicone fluid valve
• Finned aluminum faceplate construction for efficient heat dissipation from the clutch body itself
• Meets or exceeds OEM specifications for fit, form, and function
• High-quality heavy duty bearing with high-temperature moly grease for long service life
• Direct bolt-on installation with no modifications required

OEM / Cross-Reference Part Numbers: 104 200 01 22, 103 200 04 22 (Mercedes-Benz); Hayden 2696

The Caliso 22307 is a reliable, cost-effective solution to restore proper engine cooling and prevent overheating on compatible vehicles.