Four Seasons 36901 Thermal Engine Cooling Fan Clutch

The Four Seasons 36901 is a thermal fan clutch designed to regulate engine cooling fan operation for improved efficiency and performance. This temperature-activated clutch automatically engages and disengages the cooling fan based on engine temperature, helping to maintain optimal operating conditions while reducing unnecessary fan noise and improving fuel economy.

Key Features:

• Thermal design automatically modulates fan speed based on engine temperature
• Engages the fan at 70-90% of shaft speed when additional cooling is required
• Disengages to 25-35% of shaft speed during normal operation to reduce drag and noise
• Manufactured by Four Seasons, part of the SMP Temperature Control Division
• Quality tested and inspected to meet OE specifications
• Backed by a 12-month or 12,000-mile limited warranty

Four Seasons is the largest aftermarket mobile climate control parts supplier in the industry, with over 50 years of experience engineering replacement cooling system components. Each fan clutch is designed to match the performance, fit, and function of the original equipment part it replaces, ensuring reliable operation and proper cooling system efficiency.