Caliso 22170 Heavy-Duty Thermal Fan Clutch Engine Cooling Replacement

The Caliso 22170 is a heavy-duty thermal engine cooling fan clutch engineered as a direct-fit replacement for worn or failed OEM fan clutches. Designed to restore proper cooling system function, this thermal fan clutch uses a bi-metal thermostatic coil to sense underhood temperatures and automatically engage or disengage the cooling fan as needed.

How It Works:

• At low speeds or high engine temperatures, the clutch fully engages the fan to maximize airflow through the radiator
• At higher speeds or normal operating temperature, the clutch partially disengages the fan to reduce parasitic engine load and improve fuel economy
• Thermal engagement responds to actual heat conditions rather than engine RPM alone, providing smarter and more efficient cooling

Key Features:

• Heavy-duty construction built to meet or exceed OEM specifications
• Thermal bi-metal spring for precise temperature-responsive engagement
• Direct bolt-on replacement — no modifications required
• Helps prevent engine overheating, excessive fan noise, and poor A/C performance at idle
• Restores proper cooling efficiency lost due to a failed or slipping fan clutch

Cross-references: Hayden 2770, 2790, 2822. The Caliso 22170 is a reliable, cost-effective solution for restoring factory-level cooling performance.