Caliso 22073 Heavy Duty Thermal Fan Clutch

The Caliso 22073 is a heavy duty thermal fan clutch engineered as a direct-fit replacement for vehicles requiring reliable engine cooling. Designed to match the fit, form, and function of the original equipment clutch it replaces, this unit restores proper thermal management to your cooling system.

Heavy duty thermal fan clutches operate using a bi-metallic spring and silicone-based fluid to sense underhood temperatures. When the engine reaches operating temperature, the spring actuates a valve plate, allowing fluid to flow and engaging the fan. As temperatures stabilize, the clutch disengages, reducing unnecessary load on the engine. Heavy duty units drive the fan at approximately 80–90% of water pump shaft speed when engaged, delivering superior airflow compared to standard duty alternatives.

Key Features:

• Heavy duty thermal engagement for high-demand cooling requirements
• Bi-metallic spring and silicone fluid design for precise temperature-activated engagement
• Direct OE-style replacement — engineered to match original equipment fit and performance
• Helps prevent engine overheating, excessive noise, and reduced fuel economy caused by a failed fan clutch
• Durable construction for long service life under demanding operating conditions

Replacing a worn or failed fan clutch with the correct heavy duty unit is critical. A faulty fan clutch can result in engine overheating, poor A/C performance, excessive fan noise, and added parasitic engine load. The Caliso 22073 restores proper cooling system function and is intended for the specific application for which it is cataloged.