Four Seasons 36963 Engine Cooling Fan Clutch

Severe Duty Thermal Fan Clutch for Ford Trucks

The Four Seasons 36963 is a severe duty thermal engine cooling fan clutch built for standard rotation applications that demand consistent cooling control. It is a new, non-electronic replacement made from aluminum and engineered to meet or exceed OEM requirements for the listed Ford applications.

Key Features

• Thermal fan clutch with severe duty truck fan drive design
• Standard rotation (STD) for confirmed Ford fitments
• Aluminum construction with raw aluminum finish
• Non-electronic design for direct mechanical cooling control
• 6-bolt / 6-hole mounting pattern with 6-inch fan bolt circle
• 7.4-inch clutch diameter and 1.88-inch mount diameter
• Performance rated and built to meet or exceed OEM specifications
• New replacement part for service and repair applications

Product Details

Four Seasons Fan Clutch 36963 is part of the Fan Clutch product line and is intended for severe duty cooling demands in Ford E-250 Econoline Club Wagon, E-350 Econoline, E-350 Econoline Club Wagon, F-150, F-250, and F-350 applications. This thermal clutch uses a mechanical response to engine temperature to help regulate fan engagement, supporting stable cooling performance in demanding driving conditions. The aluminum body, 3.52-inch overall height, 0.66-inch pilot depth, and hex mounting type provide the dimensional profile needed for the specified fitments. This part cross-references Gates 22601 and Standard Ignition 7728 for the same application.

What It Helps Address

• Engine overheating caused by a worn or weak fan clutch
• Fan engagement issues in severe duty Ford truck cooling systems
• Excessive fan slip that reduces airflow at operating temperature
• Noisy or inconsistent mechanical fan operation
• Cooling performance loss in Ford E-350 Econoline and F-250/F-350 service use

Installation Notes and Tips

Verify standard rotation, bolt circle, pilot depth, and mount diameter before installation. This Four Seasons 36963 fan clutch uses a 6-bolt mounting pattern and does not include mounting hardware. Confirm the vehicle’s indirect injection and date-specific fitment where listed for 1992 Ford E-350 Econoline, E-350 Econoline Club Wagon, F-250, and F-350 applications. Always inspect the fan, water pump area, and surrounding cooling components during replacement to ensure proper operation after installation.

Quality Assurance

This fan clutch is a new, performance-rated replacement that meets or exceeds OEM specifications for the listed applications. Four Seasons 36963 is built for severe duty service and direct-fit cooling system repair on compatible Ford trucks and vans.