Hayden 2850 Engine Cooling Fan Clutch

Hayden 2850 Severe Duty Fan Clutch

The Hayden 2850 is a thermal engine cooling fan clutch built for reverse-rotation applications that demand consistent airflow control. It uses an aluminum construction, a hex mounting type, and a severe-duty design for truck and van cooling systems.

Key Features

• Thermal, non-electronic fan clutch for mechanical cooling systems
• Reverse rotation (REV) design for the listed applications
• Severe duty and truck fan drive style
• Aluminum construction with raw aluminum finish
• 4-bolt mounting and 4 mounting holes
• Mount diameter: 1.86 in. (47 mm)
• Pilot diameter: 1.42 in. (36 mm)
• Fan bolt circle: 3.81 in. (96.8 mm)
• Overall height: 3.83 in. (97.2 mm)
• Meets or exceeds OEM requirements

Product Details

Hayden Fan Clutch 2850 is a severe-duty thermal fan clutch engineered for reverse-rotation cooling fan systems. The aluminum body, 7.4 in. maximum diameter, and 1.32 in. distance from clutch to mounting flange support the fitment requirements used on select Chevrolet Silverado 2500 HD, Chevrolet Silverado 3500 HD, GMC Sierra 2500 HD, GMC Sierra 3500 HD, and related Express, Savana, and P-series applications. This part cross-references Dayco 22625 and Four Seasons 46037 for the same application.

Vehicle Fitment

• Fits 2006-2010 Chevrolet Silverado 2500 HD, N/A — reverse rotation severe duty thermal engine cooling fan clutch.
• Fits 2007-2010 Chevrolet Silverado 3500 HD, N/A — reverse rotation severe duty thermal engine cooling fan clutch.
• Fits 2006-2010 GMC Sierra 2500 HD, N/A — reverse rotation severe duty thermal engine cooling fan clutch.
• Fits 2007-2010 GMC Sierra 3500 HD, N/A — reverse rotation severe duty thermal engine cooling fan clutch.
• Fits 2007 Chevrolet Silverado 2500 HD Classic, N/A — reverse rotation severe duty thermal engine cooling fan clutch.
• Fits 2007 Chevrolet Silverado 3500 Classic, N/A — reverse rotation severe duty thermal engine cooling fan clutch.
• Fits 2007 GMC Sierra 2500 HD Classic, N/A — reverse rotation severe duty thermal engine cooling fan clutch.
• Fits 2007 GMC Sierra 3500 Classic, N/A — reverse rotation severe duty thermal engine cooling fan clutch.
• Fits 2006 Chevrolet Silverado 3500, N/A — reverse rotation severe duty thermal engine cooling fan clutch.
• Fits 2006 GMC Sierra 3500, N/A — reverse rotation severe duty thermal engine cooling fan clutch.
• Fits 1999-2002 Chevrolet Express 2500, N/A — reverse rotation severe duty thermal engine cooling fan clutch.
• Fits 1999-2002 Chevrolet Express 3500, N/A — reverse rotation severe duty thermal engine cooling fan clutch.
• Fits 1999-2002 GMC Savana 2500, N/A — reverse rotation severe duty thermal engine cooling fan clutch.
• Fits 1999-2002 GMC Savana 3500, N/A — reverse rotation severe duty thermal engine cooling fan clutch.
• Fits 1999 Chevrolet P30, N/A — reverse rotation severe duty thermal engine cooling fan clutch.
• Fits 1999 GMC P3500, N/A — reverse rotation severe duty thermal engine cooling fan clutch.

Common Cooling Issues It Can Address

• Engine temperature rise during towing or heavy-load operation
• Reduced fan engagement in a reverse-rotation thermal system
• Cooling fan clutch wear that affects airflow control
• Noise or inconsistency from a failing mechanical fan clutch
• Cooling performance loss in severe-duty truck applications

Installation Notes and Tips

Confirm reverse rotation, bolt pattern, pilot dimensions, and fan bolt circle before installation. Mounting hardware is not included, so reuse or source the correct hardware separately if needed. Verify clearance at the fan shroud and check the cooling fan assembly for wear before installing the Hayden 2850.

Quality Assurance

This Hayden Fan Clutch is a new part that meets or exceeds OEM requirements and is performance rated for severe-duty use. It is a non-electronic thermal design intended for mechanical cooling systems in the listed Chevrolet Silverado, GMC Sierra, Express, Savana, and P-series applications.