Four Seasons 46146 Engine Cooling Fan Clutch

Reliable Engine Cooling Fan Clutch for Chevrolet and GMC Trucks

The Four Seasons Fan Clutch 46146 is designed to provide precise engine cooling for heavy-duty Chevrolet and GMC trucks. Engineered with durable aluminum and an electro-viscous electronic clutch, this fan clutch ensures optimal temperature regulation for your Sierra 2500 HD, Sierra 3500 HD, Silverado 2500 HD, and Silverado 3500 HD models.

• Constructed from raw aluminum for strength and heat resistance
• Electro-viscous electronic clutch for responsive fan engagement
• Four mounting holes with M6x1.000 bolt thread for secure installation
• Severe duty style suitable for heavy-duty truck applications
• Overall diameter of 9.39 inches (238.5 mm) and height of 5.33 inches (135.38 mm)
• Designed for reverse rotation with hex mounting type
• Compatible with Chevrolet and GMC heavy-duty trucks

About the Four Seasons Fan Clutch Product Line

The Four Seasons Fan Clutch line focuses on providing reliable engine cooling components that utilize advanced electro-viscous technology. This electronic fan clutch model 46146 offers precise thermal management by adjusting fan speed based on engine temperature, improving cooling efficiency and reducing unnecessary fan load. The severe duty style is tailored for demanding applications such as the Chevrolet Sierra and Silverado 2500 and 3500 HD series.

Product Details and Specifications

This engine cooling fan clutch features a robust aluminum construction with a raw aluminum finish, ensuring durability under high-temperature conditions. It includes four bolt holes and mounting holes with M6x1.000 thread size, designed for a secure fit on compatible vehicles. The clutch has an overall diameter of 9.39 inches and a bolt circle diameter of 8.66 inches, with a height of 5.33 inches, making it suitable for heavy-duty truck cooling systems. The electronic, electro-viscous clutch type provides responsive fan engagement based on engine thermal needs, and the reverse rotation design matches the factory specifications for the listed Chevrolet and GMC models.

Common Applications and Problem Solving

• Maintains optimal engine temperature in Chevrolet Sierra 2500 HD and 3500 HD trucks
• Prevents engine overheating during heavy towing or hauling
• Reduces unnecessary fan drag to improve fuel efficiency
• Replaces worn or failing fan clutches to restore proper cooling function
• Ensures reliable operation in severe duty conditions

Installation Notes and Tips

When installing the Four Seasons Fan Clutch 46146, ensure the mounting holes align correctly with the vehicle’s fan assembly. Use the specified M6x1.000 bolts to secure the clutch firmly. Verify the rotation direction matches the reverse rotation specification. Proper torque settings should be followed to avoid damage to the clutch or fan assembly. It is recommended to inspect the cooling fan and surrounding components for wear or damage during installation.

Quality Assurance and Warranty

Four Seasons manufactures this fan clutch to meet or exceed OEM standards for durability and performance. The electro-viscous electronic clutch design is tested for consistent operation under severe duty conditions. While specific warranty details are not provided here, Four Seasons products typically come with a limited warranty covering defects in materials and workmanship.