Hayden 2840 Engine Cooling Fan Clutch

Hayden 2840 Severe Duty Thermal Fan Clutch

Hayden 2840 is a severe duty thermal engine cooling fan clutch built for reverse-rotation applications that demand consistent airflow control. It is a non-electronic, aluminum unit with a 7.4-inch clutch diameter and thermal engagement for heavy-duty cooling performance.

Key Features

• Severe duty thermal fan clutch for truck and heavy-use cooling systems
• Reverse rotation design for the listed Chevrolet and GMC applications
• Aluminum construction with raw aluminum finish
• Non-electronic thermal operation
• 4-bolt mounting pattern with HEX mounting type
• Meets or exceeds OEM requirements
• Performance rated for demanding cooling service

Product Details

This Hayden Fan Clutch line focuses on dependable engine cooling control for vehicles that see higher thermal loads. Part number 2840 uses a thermal design to engage the fan as temperatures rise, helping maintain airflow through the radiator and supporting stable operating temperatures in severe-duty use. It is a direct replacement style for reverse-rotation truck and SUV cooling systems, including 1999 Chevrolet C1500 Suburban, 1999 Chevrolet K2500, 1999 GMC Tahoe, and 2000 Chevrolet C3500 applications.

This part cross-references Four Seasons 36755 and Febi-Bilstein 22614 for the same application.

What It Helps Address

• Engine temperature rise during towing or heavy-load driving
• Reduced fan engagement from a worn thermal clutch
• Cooling fan slip that can affect radiator airflow
• Noise or inconsistent operation from an aging fan clutch
• Cooling performance issues in reverse-rotation systems

Installation Notes and Tips

Verify reverse rotation, bolt pattern, pilot dimensions, and fan bolt circle before installation. Hayden 2840 uses a 4-bolt, HEX mount with M8 x 1.25 hole threading, a 1.86-inch mount diameter, and a 1.42-inch pilot diameter. Mounting hardware is not included, so reuse or source the correct hardware as needed. Confirm clearance with the 7.4-inch clutch diameter and 4.27-inch overall height during service.

Quality Assurance

Hayden 2840 is a new, performance-rated fan clutch that meets or exceeds OEM specifications. It is built for severe duty service and is listed for 1999-2000 Chevrolet and GMC C2500, C3500, K2500, K3500, Suburban, and Tahoe applications with reverse-rotation thermal fan clutch requirements.