Four Seasons 46002 Engine Cooling Fan Clutch

Four Seasons 46002 Fan Clutch Overview

Four Seasons 46002 is a standard-duty thermal engine cooling fan clutch built for import applications that need controlled fan engagement and consistent cooling performance. This aluminum, non-electronic unit is engineered for standard rotation and meets or exceeds OEM requirements for the listed BMW fitments, including BMW M3, BMW Z3, BMW 535i, BMW M5, BMW 735i, and BMW 735iL.

Key Features

• Thermal fan clutch design for temperature-based fan engagement
• Standard rotation, standard-duty construction
• Aluminum housing with raw aluminum finish
• Non-electronic design for mechanical cooling fan systems
• 3-bolt mounting pattern with M6 x 1.0 hole thread
• 6.3 in. clutch maximum diameter and 5.79 in. fan bolt circle
• Meets or exceeds OEM specifications
• Performance rated for demanding cooling system service

Product Details

The Four Seasons Fan Clutch line focuses on direct-fit cooling system service parts for vehicles that rely on a mechanical engine fan. Part number 46002 uses a thermal operating design to help regulate fan speed based on temperature, supporting stable engine cooling in BMW applications such as the 2001-2006 BMW M3, 2001-2002 BMW Z3, and 1989-1993 BMW 535i. Its standard-duty construction, hex mounting type, and compact 6.3-inch diameter make it a practical replacement for import cooling systems that require a standard rotation fan clutch.

This part cross-references Gates 22099 and Hayden 2594 for the same application.

What It Helps Address

• Engine fan that stays engaged longer than normal
• Cooling fan that does not engage properly at operating temperature
• Excessive engine temperature during idle or low-speed driving
• Noisy or worn mechanical fan clutch operation
• Cooling performance loss in BMW M3, Z3, 535i, M5, 735i, and 735iL applications

Installation Notes and Tips

• Verify the vehicle uses a standard rotation, thermal mechanical fan clutch before installation.
• Confirm the 3-bolt mounting pattern, 5.79 in. fan bolt circle, and pilot dimensions match the original unit.
• Mounting hardware is not included.
• Inspect the fan blades, water pump area, and surrounding cooling components during replacement.
• Follow the vehicle service manual for torque and removal procedures.

Quality Assurance

Four Seasons 46002 is a new replacement part built to meet or exceed OEM specifications and is performance rated for cooling system service. It is designed for direct replacement use in the listed BMW applications and follows the Four Seasons Fan Clutch product line standards for mechanical engine cooling components.