Caliso 22033 Heavy Duty Thermal Fan Clutch Replacement

The Caliso 22033 is a heavy duty thermal fan clutch designed as a direct-fit replacement for worn or failed OEM fan clutches. This thermally controlled clutch unit mounts to the water pump shaft and regulates engine cooling fan engagement based on underhood temperature, helping maintain optimal engine operating temperatures while reducing unnecessary parasitic load.

Thermal fan clutches operate using a bi-metal thermal spring that senses heat in front of the radiator. When engine temperatures rise, the clutch fully engages the fan to maximize airflow through the radiator. When the engine is at normal operating temperature or under light load, the clutch partially disengages, reducing noise, improving fuel economy, and decreasing strain on the accessory drive system.

Key Features:

• Heavy duty thermal fan clutch construction for reliable, long-lasting performance
• Thermally controlled engagement responds to underhood temperature conditions
• Direct bolt-on replacement — no modifications required
• Helps prevent engine overheating and protects the cooling system
• Reduces fan noise and parasitic power loss when full cooling is not needed
• OEM-style fit, form, and function

Cross-Reference Part Numbers:

• Hayden: 2680
• GM: 91176889, 91177535
• Suzuki: 17120-52D03, 17120-77E07

The Caliso 22033 thermal fan clutch is a quality aftermarket replacement that restores proper cooling system operation, helping eliminate symptoms such as engine overheating, poor A/C performance at idle, excessive fan noise, and fan drag.