Hayden 6631 Engine Cooling Fan Clutch

Heavy Duty Thermal Fan Clutch for Toyota Cooling Systems

The Hayden 6631 is a heavy duty thermal engine cooling fan clutch built for Toyota applications that need consistent fan engagement under load. It is a new, aluminum, standard-rotation unit that meets or exceeds OEM requirements for direct replacement service.

Key Features

• Thermal fan clutch design for temperature-based fan control
• Heavy duty style for demanding cooling system service
• Aluminum construction with raw aluminum finish
• Standard rotation configuration
• Flange mounting type with 4 bolt holes and 4 mounting holes
• Meets or exceeds OEM specifications
• Performance rated for replacement use
• New part, not remanufactured

Product Details

Hayden Fan Clutch 6631 is engineered as a thermal engine cooling fan clutch for Toyota trucks and SUVs, including the 4Runner, Tacoma, FJ Cruiser, and Tundra. This heavy duty fan clutch uses a flange mount and standard rotation layout, with a 6.65-inch clutch diameter, 3.07-inch mount diameter, and 4.17-inch overall height. The aluminum body and thermal operation support controlled fan engagement as engine temperature rises, helping maintain proper cooling system performance in everyday driving and towing conditions.

This part cross-references Gates 22411 and Dorman - HELP 46106 for the same application. The Hayden 6631 part number is also commonly searched as a direct replacement for Toyota cooling system service.

Vehicle Fitment

• Fits 2021-2024 Toyota 4Runner, N/A; Standard Rotation; Fan Clutch
• Fits 2021-2023 Toyota Tacoma, N/A; Standard Rotation; Fan Clutch
• Fits 2010-2020 Toyota 4Runner, N/A; Standard Rotation Heavy Duty Thermal Fan Clutch; Fan Clutch
• Fits 2016-2020 Toyota Tacoma, N/A; Standard Rotation Heavy Duty Thermal Fan Clutch; Fan Clutch
• Fits 2010-2014 Toyota FJ Cruiser, N/A; Standard Rotation Heavy Duty Thermal Fan Clutch; Fan Clutch
• Fits 2012-2014 Toyota Tundra, N/A; Standard Rotation Heavy Duty Thermal Fan Clutch; Fan Clutch
• Fits 2011 Toyota Tundra, N/A; From 10/2010; Fan Clutch

Installation Notes and Tips

• Verify the mounting flange, bolt pattern, and pilot dimensions before installation.
• Confirm standard rotation and thermal clutch application for the vehicle.
• Inspect the fan, water pump area, and surrounding cooling components during replacement.
• Mounting hardware is not included.
• Use the vehicle-specific fitment notes to confirm the correct Toyota 4Runner, Tacoma, FJ Cruiser, or Tundra application.

Quality Assurance

Hayden 6631 is a new, performance-rated fan clutch that meets or exceeds OEM specifications for the listed Toyota applications. Its heavy duty thermal design and aluminum construction support reliable cooling system service in factory-style replacement applications.