Four Seasons 46004 Engine Cooling Fan Clutch

Four Seasons 46004 Fan Clutch Overview

The Four Seasons 46004 engine cooling fan clutch is a standard-duty thermal replacement for select Audi and Volkswagen applications. Built from aluminum with a non-electronic design, it helps regulate fan engagement based on temperature for consistent cooling performance.

Compatible with 1997-2001 Audi A4, 1997-2001 Audi A4 Quattro, and 1998-2005 Volkswagen Passat, this Four Seasons Fan Clutch line part is built to meet or exceed OEM requirements for the listed applications.

Key Features

• Four Seasons Fan Clutch part number 46004
• Thermal, standard-duty fan clutch design
• Aluminum construction with raw aluminum finish
• Non-electronic clutch for mechanical cooling control
• Standard rotation (STD)
• Flange mounting style with 4-bolt, 4-hole pattern
• 5.5 in. clutch diameter and 4.88 in. fan bolt circle
• Meets or exceeds OEM specifications for listed fitments
• Performance rated for replacement cooling service

Detailed Description

The Four Seasons 46004 is a thermal engine cooling fan clutch engineered for import vehicles that use a standard rotation, flange-mounted cooling fan setup. Its aluminum body, 5.5-inch clutch diameter, and 1.95-inch mount diameter support a precise fit on the specified Audi A4, Audi A4 Quattro, and Volkswagen Passat applications. As part of the Four Seasons Fan Clutch product line, this unit focuses on OE-style fit and temperature-based fan control for dependable engine cooling.

This part cross-references Hayden 2596 and Gates 22302 for the same application. Four Seasons 46004 is also referenced by multiple interchange numbers, including 11146004 and 922446.

What It Helps Address

• Engine overheating caused by a worn fan clutch
• Fan engagement that is delayed, weak, or inconsistent
• Cooling fan noise from a failing thermal clutch
• Reduced airflow through the radiator at operating temperature
• Cooling system performance issues on import vehicles with standard rotation fan drives

Installation Notes and Tips

• Verify the vehicle uses a standard rotation, thermal, flange-mounted fan clutch before installation.
• Confirm the 4-bolt pattern, 4.88 in. fan bolt circle, and M6 x 1.0 hole thread match the original setup.
• Inspect the fan, mounting flange, and surrounding cooling components for wear before replacing the clutch.
• Mounting hardware is not included.
• Use the vehicle service procedure for torque and clearance checks during installation.

Quality Assurance

Four Seasons 46004 is a new replacement fan clutch built to meet or exceed OEM specifications for the listed applications. It is a performance-rated, standard-duty thermal unit intended for direct-fit cooling system service on compatible Audi and Volkswagen models.