Hayden 2685 Engine Cooling Fan Clutch

Hayden 2685 Fan Clutch Overview

Hayden 2685 is a standard-duty thermal engine cooling fan clutch for reverse-rotation applications. Built from aluminum with a hex mounting type, it is made for select Mercedes-Benz models that use a 5-inch and 6-inch import-style fan clutch layout.

Compatible With Mercedes-Benz ML500, ML55 AMG, E430, SL500, SL55 AMG, and ML430 applications, Hayden 2685 supports proper fan engagement in reverse-rotation cooling systems. This Hayden Fan Clutch line focuses on direct-fit cooling service for import vehicles that require thermal control at the fan hub.

Key Features

• Thermal, non-electronic fan clutch design
• Standard-duty construction for everyday cooling service
• Aluminum body with raw aluminum finish
• Reverse rotation configuration
• Hex mounting type with 3-bolt, 3-hole pattern
• Meets or exceeds OEM requirements
• Performance rated for cooling system service
• Hayden 2685 part number for direct identification

Detailed Product Description

Hayden 2685 is an engine cooling fan clutch designed for reverse-rotation thermal operation. It uses a standard-duty, non-electronic design with a 6.3-inch clutch diameter, 5.79-inch fan bolt circle, and 1.44-inch mount diameter. The aluminum construction and thermal engagement style support consistent fan control in applications that rely on mechanical clutch operation rather than electronic control.

This part cross-references Four Seasons 46058 and Gates 22321 for the same application. It is a direct replacement option for Mercedes-Benz ML500, ML55 AMG, E430, SL500, SL55 AMG, and ML430 cooling system service, including 2002-2006 Mercedes-Benz ML500, 2000-2003 Mercedes-Benz ML55 AMG, 1998-2002 Mercedes-Benz E430, 1999-2002 Mercedes-Benz SL500, 2002 Mercedes-Benz SL55 AMG, and 1999-2001 Mercedes-Benz ML430.

What It Helps Address

• Cooling fan engagement that is delayed or inconsistent
• Excessive engine temperature during low-speed driving
• Fan clutch noise from worn internal thermal components
• Reduced airflow through the radiator and condenser
• Cooling performance issues in reverse-rotation fan systems

Installation Notes and Tips

Verify reverse rotation, bolt pattern, pilot dimensions, and fan bolt circle before installation. Hayden 2685 uses M6 x 1.0 hole threading, a 1.18-inch pilot diameter, and a 0.52-inch pilot depth. Mounting hardware is not included, so reuse or source the correct hardware separately if required by the vehicle setup.

For best results, inspect the fan blades, water pump, belts, and surrounding cooling components during replacement. Confirm fitment against the vehicle’s cooling fan clutch specification before final assembly.

Quality Assurance

Hayden Fan Clutch products are built for standard-duty cooling service and this unit is listed as new, performance rated, and meeting or exceeding OEM requirements. Hayden 2685 is engineered for direct replacement use in the specified Mercedes-Benz applications.