Four Seasons 36784 Engine Cooling Fan Clutch

Heavy Duty Thermal Fan Clutch

Four Seasons Fan Clutch 36784 is a heavy-duty thermal engine cooling fan clutch built for reverse-rotation applications. It is a new, non-electronic aluminum unit with a 7.23 in. clutch diameter, 4-bolt mounting, and OE-matching fitment for select Chevrolet Colorado, GMC Canyon, Hummer H3, Hummer H3T, Ford Explorer, and Mercury Mountaineer applications.

The Four Seasons fan clutch line focuses on direct-fit cooling system service parts for thermal fan control. Part number 36784 follows that approach with a heavy-duty clutch type, performance-rated construction, and OEM-level dimensional specs for service on demanding truck and SUV cooling systems.

Key Features

• Heavy-duty thermal fan clutch for engine cooling control
• Aluminum construction with raw aluminum finish
• Reverse rotation design
• Non-electronic clutch type
• 4-bolt, hex mounting style
• Meets or exceeds OEM requirements
• Performance rated for demanding cooling applications
• New replacement part for direct service use

Detailed Description

Four Seasons 36784 is an engine cooling fan clutch designed to regulate fan engagement based on temperature in reverse-rotation systems. With a 7.23 in. overall diameter, 2.69 in. overall height, 1.44 in. mount diameter, and 3.81 in. fan bolt circle, it is built to match the dimensional requirements of the original cooling assembly. The thermal, heavy-duty design supports consistent fan operation in vehicles that place higher demand on the cooling system, including 2009-2012 Chevrolet Colorado, 2009-2012 GMC Canyon, 2008-2010 Hummer H3, 2009-2010 Hummer H3T, 1996-2001 Ford Explorer, and 1997-2001 Mercury Mountaineer.

This part cross-references Anchor 2841 and Febi-Bilstein 22615 for the same application. Use Four Seasons 36784 when servicing a reverse-rotation thermal fan clutch on the listed vehicles, including Chevrolet Colorado and GMC Canyon cooling system repairs.

Common Cooling System Issues It Can Address

• Fan clutch that no longer engages at the proper temperature
• Cooling fan noise caused by worn clutch internals
• Reduced airflow through the radiator at idle or low speed
• Overheating concerns tied to weak fan drive performance
• Inconsistent fan engagement in heavy-duty thermal applications

Installation Notes and Tips

Verify reverse rotation, bolt pattern, pilot dimensions, and fan bolt circle before installation. This clutch uses a hex mounting type and 4-bolt pattern with M8 x 1.25 hole thread specification. Mounting hardware is not included, so reuse or source the correct hardware as needed. Confirm clearance at the radiator shroud and check the fan assembly for wear before installing the new clutch.

Quality Assurance

Four Seasons 36784 is a new replacement fan clutch that meets or exceeds OEM requirements and is performance rated for service use. Its aluminum construction and thermal heavy-duty design support dependable cooling-system operation in the listed Chevrolet Colorado, GMC Canyon, Hummer H3, Hummer H3T, Ford Explorer, and Mercury Mountaineer applications.