Hayden 2791 Engine Cooling Fan Clutch

Hayden 2791 Severe Duty Thermal Fan Clutch

The Hayden 2791 is a severe duty thermal engine cooling fan clutch built for reverse-rotation applications that demand consistent airflow control. With an aluminum construction, thermal operation, and OEM-level performance rating, it is a direct-fit cooling solution for select Dodge Ram, Ram Van, Ramcharger, B-Series, and Jeep Grand Cherokee applications.

Hayden Fan Clutch 2791 is part of the Hayden Fan Clutch line, focused on dependable engine cooling control for truck and van platforms. This severe duty design is intended for demanding service conditions where stable fan engagement and temperature management matter.

• Thermal, severe duty fan clutch for reverse-rotation cooling systems
• Aluminum housing with raw aluminum finish
• Performance rated and meets or exceeds OEM requirements
• Mechanical, non-electronic design
• HEX mounting type with 5/16-18 hole thread specification
• Fan bolt circle: 3.25 in. / 82.6 mm
• Mount diameter: 1.44 in. / 36 mm
• Pilot diameter: 1.18 in. / 30 mm
• Overall height: 3.77 in. / 95.6 mm
• Clutch maximum diameter: 6.45 in.

Detailed Product Overview

This Hayden 2791 fan clutch uses thermal response to regulate fan engagement based on engine temperature, helping maintain cooling performance in severe-duty driving conditions. It is a reverse-rotation unit with a 1.75 in. distance from clutch to mounting flange, making it a fitment-specific replacement for applications that use a thread-on fan clutch setup and the listed mounting dimensions. For buyers searching for a 2003 Dodge Ram 1500 fan clutch, a 1994-2002 Dodge Ram 2500 fan clutch, or a 1994-1998 Jeep Grand Cherokee fan clutch, this part number is a direct reference point.

This part cross-references Gates 22159 and 22160 for the same application. Hayden 2791 is also referenced by multiple OE and aftermarket numbers, including 922791 and FC2791.

Vehicle Fitment

• Fits 2003 Dodge Ram 1500, N/A — Reverse Rotation; Severe Duty Thermal Fan Clutch; To 5/03; w/ Max Cooling
• Fits 2003 Dodge Ram 1500 Van, N/A — Reverse Rotation; Severe Duty Thermal Fan Clutch; w/ Heavy Duty Cooling
• Fits 1999-2003 Dodge Ram 1500 Van, N/A — Reverse rotation and severe duty thermal engine cooling fan clutch, optional
• Fits 2003 Dodge Ram 2500 Van, N/A — Reverse Rotation; Severe Duty Thermal Fan Clutch; w/ Heavy Duty Cooling
• Fits 1999-2003 Dodge Ram 2500 Van, N/A — Reverse rotation and severe duty thermal engine cooling fan clutch, optional
• Fits 2003 Dodge Ram 3500 Van, N/A — Reverse Rotation; Severe Duty Thermal Fan Clutch; w/ Heavy Duty Cooling
• Fits 1997-2003 Dodge Ram 3500 Van, N/A — Reverse rotation and severe duty thermal engine cooling fan clutch, optional
• Fits 1999-2002 Dodge Ram 1500 Van, N/A — Reverse Rotation; Optional Duty Thermal Fan Clutch; w/ Thread-On Fan Clutch
• Fits 1997 Dodge Ram 1500 Van, N/A — Reverse Rotation; Optional Duty Thermal Fan Clutch; w/ Thread-On Fan Clutch
• Fits 1998-2002 Dodge Ram 1500 Van, N/A — Reverse rotation severe duty thermal fan clutch with thread-on installation
• Fits 1995-1996 Dodge Ram 1500 Van, N/A — Reverse rotation severe duty thermal fan clutch with thread-on installation
• Fits 1994-2002 Dodge Ram 2500, N/A — Reverse rotation severe duty thermal engine cooling fan clutch
• Fits 1996-2002 Dodge Ram 2500 Van, N/A — Reverse rotation severe duty thermal fan clutch with thread-on installation
• Fits 1994-2002 Dodge Ram 3500, N/A — Reverse rotation severe duty thermal engine cooling fan clutch
• Fits 1999-2002 Dodge Ram 3500 Van, N/A — Reverse rotation severe duty thermal fan clutch with thread-on installation
• Fits 1996 Dodge Ram 3500 Van, N/A — Reverse rotation severe duty thermal fan clutch with thread-on installation
• Fits 1994-2001 Dodge Ram 1500, N/A — Reverse rotation severe duty thermal fan clutch with thread-on installation
• Fits 1994-2001 Dodge Ram 1500, N/A — Reverse Rotation; Severe Duty Thermal Fan Clutch; w/ Thread-On Fan Clutch; 1.75" Shaft
• Fits 1994-2001 Dodge Ram 2500, N/A — Reverse Rotation; Severe Duty Thermal Fan Clutch; w/ Thread-On Fan Clutch; 1.75" Shaft
• Fits 2001 Dodge Ram 2500 Van, N/A — Reverse Rotation; Optional Duty Thermal Fan Clutch; w/ Thread-On Fan Clutch
• Fits 1999-2001 Dodge Ramcharger, N/A — Reverse Rotation; Severe Duty Thermal Fan Clutch; w/ Thread-On Fan Clutch; 1.75" Shaft
• Fits 1995-1998 Dodge B1500, N/A — Reverse Rotation; Optional Duty Thermal Fan Clutch; w/ Thread-On Fan Clutch
• Fits 1995-1998 Dodge B1500, N/A — Reverse rotation severe duty thermal fan clutch with thread-on installation
• Fits 1998 Dodge B1500, N/A — Reverse rotation and severe duty thermal engine cooling fan clutch, optional
• Fits 1995-1998 Dodge B2500, N/A — Reverse rotation severe duty thermal fan clutch with thread-on installation
• Fits 1995-1998 Dodge B2500, N/A — Reverse rotation and severe duty thermal engine cooling fan clutch, optional
• Fits 1995-1998 Dodge B3500, N/A — Reverse rotation severe duty thermal fan clutch with thread-on installation
• Fits 1995-1998 Dodge B3500, N/A — Reverse rotation and severe duty thermal engine cooling fan clutch, optional
• Fits 1994-1998 Jeep Grand Cherokee, N/A — Reverse rotation severe duty thermal engine cooling fan clutch
• Fits 1995-1997 Dodge B2500, N/A — Reverse Rotation; Optional Duty Thermal Fan Clutch; w/ Thread-On Fan Clutch
• Fits 1992-1994 Dodge B150, N/A — Reverse Rotation; Optional Duty Thermal Fan Clutch; w/ Thread-On Fan Clutch
• Fits 1993-1994 Dodge B150, N/A — Reverse rotation severe duty thermal fan clutch with thread-on installation
• Fits 1992-1994 Dodge B250, N/A — Reverse Rotation; Optional Duty Thermal Fan Clutch; w/ Thread-On Fan Clutch
• Fits 1993-1994 Dodge B250, N/A — Reverse rotation severe duty thermal fan clutch with thread-on installation
• Fits 1993-1994 Dodge B250, N/A — Reverse rotation and severe duty thermal engine cooling fan clutch, optional
• Fits 1993-1994 Dodge B350, N/A — Reverse rotation severe duty thermal fan clutch with thread-on installation
• Fits 1993-1994 Dodge B350, N/A — Reverse rotation and severe duty thermal engine cooling fan clutch, optional

Installation Notes and Tips

Confirm reverse-rotation fan clutch requirements before installation. Verify the mounting style, pilot diameter, bolt circle, and overall height against the original unit to ensure proper alignment with the fan and water pump assembly. Mounting hardware is not included, so reuse or source the correct hardware as needed for the application.

For best results, inspect the fan blades, water pump bearing, and surrounding cooling components during replacement. A worn fan clutch can contribute to elevated engine temperatures, reduced airflow at idle, fan noise, and inconsistent cooling performance in Dodge Ram, Ram Van, and Jeep Grand Cherokee applications.

Quality Assurance

Hayden designs this fan clutch as a new, performance-rated replacement that meets or exceeds OEM requirements. The aluminum construction and thermal severe-duty design support dependable cooling control in demanding truck and van service.