Four Seasons 36782 Engine Cooling Fan Clutch

Four Seasons 36782 Severe Duty Fan Clutch

Four Seasons 36782 is a thermal engine cooling fan clutch built for severe-duty service and reverse rotation applications. It is a non-electronic, aluminum fan clutch that meets or exceeds OEM requirements and is performance rated for demanding cooling-system operation.

Compatible With 2001-2005 Ford Explorer, 2001-2005 Ford Explorer Sport Trac, 2002-2003 Ford Explorer Sport, 2001-2005 Mercury Mountaineer, and 2003-2005 Lincoln Aviator applications that use a reverse rotation thermal fan clutch.

Key Features

• Brand: Four Seasons Fan Clutch
• Part number: 36782
• Severe duty thermal fan clutch for truck and SUV cooling systems
• Reverse rotation design
• Non-electronic construction
• Aluminum housing with raw aluminum finish
• Mounting type: HEX
• Fan bolt circle: 3.25 in. / 82.6 mm
• Mount diameter: 1.44 in. / 36 mm
• Overall height: 3.27 in. / 82.9 mm
• Clutch maximum diameter: 6.45 in. / 163.8 mm
• Meets or exceeds OEM specifications
• Performance rated

Product Details

The Four Seasons Fan Clutch line focuses on replacement cooling components for vehicles that rely on mechanical fan engagement to manage engine temperature. This severe-duty thermal unit is built for reverse rotation systems and uses a thermal response to control fan drive based on operating conditions. Four Seasons 36782 is a direct-fit style replacement for select Ford, Mercury, and Lincoln models, including Explorer, Explorer Sport Trac, Explorer Sport, Mountaineer, and Aviator applications.

This part cross-references Hayden 2776 and Monroe Shocks & Struts 271358 for the same application.

Common Cooling System Symptoms

• Engine temperature rises during idle or low-speed driving
• Fan engagement feels inconsistent or delayed
• Cooling fan noise changes with clutch wear
• Reduced airflow through the radiator and condenser
• Overheating concerns in towing, hauling, or stop-and-go use

Installation Notes

• Verify reverse rotation and thermal clutch specifications before installation.
• Confirm fan bolt circle, mount diameter, pilot depth, and bolt thread match the original unit.
• Mounting hardware is not included.
• Inspect the fan blade, water pump, and surrounding cooling components during replacement.
• Use the vehicle service procedure for proper torque and clearance checks.

Quality Assurance

Four Seasons 36782 is a new, performance-rated fan clutch that meets or exceeds OEM requirements for the listed applications. It is built for severe-duty use in compatible Ford Explorer, Explorer Sport Trac, Explorer Sport, Mercury Mountaineer, and Lincoln Aviator cooling systems.