Four Seasons 36903 Thermal Engine Cooling Fan Clutch

The Four Seasons 36903 is a thermal engine cooling fan clutch engineered to restore proper cooling system performance. As a direct-fit replacement, it is designed to meet or exceed original equipment manufacturer (OEM) specifications for reliable fit and function.

The thermal design automatically engages the cooling fan in response to underhood heat, improving engine temperature regulation and reducing unnecessary fan drag when full cooling is not required. This helps maintain optimal operating temperatures while supporting fuel efficiency.

Key Features:

• Thermal fan clutch design engages fan based on engine heat demand
• Item diameter: 6.65 inches for precise OEM-style fitment
• Meets or exceeds OEM specifications for performance and durability
• Precision-machined components for consistent, reliable operation
• Designed, tested, and validated for quality assurance before leaving the factory
• Direct-fit replacement for straightforward installation

Four Seasons is part of the SMP Temperature Control Division and is recognized as one of the largest aftermarket mobile climate control parts suppliers in the industry. Every product is tested, validated, and inspected prior to shipment, ensuring dependable performance in the field.