Four Seasons 46091 Engine Cooling Fan Clutch

Reliable Engine Cooling Fan Clutch for Lexus and Toyota Vehicles

The Four Seasons Fan Clutch 46091 is engineered for severe duty applications, providing dependable engine cooling performance for select Lexus and Toyota models. Designed with durable aluminum construction, this fan clutch ensures consistent operation under demanding conditions.

• Constructed from raw aluminum for strength and heat resistance
• Severe duty D-type clutch suitable for truck fan drives
• Four bolt holes with M6x1.000 thread for secure flange mounting
• Maximum clutch diameter of 7.42 inches and overall height of 3.78 inches
• Compatible with Lexus GX460, Toyota Land Cruiser, LX570, Sequoia, and Tundra
• Meets or exceeds OEM specifications for reliable fit and function
• Non-electronic clutch design for straightforward installation

Four Seasons Fan Clutch Product Line Overview

The Four Seasons Fan Clutch line focuses on engine cooling components designed for severe duty and truck fan drive applications. This product line emphasizes durability and performance, making it suitable for heavy-duty vehicles like the Lexus GX460 and Toyota Tundra. The 46091 model exemplifies this with its robust aluminum construction and flange mounting system, ensuring compatibility and longevity in demanding environments.

Detailed Product Description

The Four Seasons Fan Clutch 46091 is a flange-mounted, severe duty engine cooling fan clutch constructed from raw aluminum. It features a 4-bolt mounting pattern with M6x1.000 threads and a clutch maximum diameter of 7.42 inches (188.5 mm). The clutch has a rotation direction specified as reverse (Rev) and includes a pilot depth of 0.64 inches (16.3 mm) with a pilot diameter of 1.5 inches. This clutch is designed without electronic control, relying on mechanical operation to engage the fan as needed. The overall height of 3.78 inches (96.3 mm) and a fan bolt circle diameter of 6.84 inches (173.7 mm) ensure proper fitment on compatible vehicles. This new, performance-rated fan clutch meets or exceeds OEM standards, providing reliable cooling for engines under severe duty conditions.

Common Applications and Problem Solving

• Prevents engine overheating by regulating fan engagement
• Reduces unnecessary fan drag to improve fuel efficiency
• Eliminates fan clutch slippage or failure in severe duty use
• Restores proper cooling system function in Lexus GX460 and Toyota Tundra
• Addresses noisy or inconsistent fan operation in Land Cruiser and LX570

Installation Notes and Tips

Installation requires removal of the existing fan clutch and mounting hardware, which is not included with this part. Ensure the mounting flange and bolt holes align correctly with the vehicle’s fan assembly. Use the specified M6x1.000 bolts to secure the clutch firmly. Verify the clutch rotation direction matches the engine’s fan rotation (reverse). It is recommended to inspect the fan blades and radiator for damage during installation to maintain optimal cooling system performance.

Quality Assurance and Warranty

The Four Seasons Fan Clutch 46091 is a new, performance-rated component that meets or exceeds OEM specifications for fit and function. Manufactured with high-quality aluminum and designed for severe duty applications, this fan clutch offers reliable operation in demanding environments. While specific warranty details are not provided, Four Seasons products typically come with a limited warranty against defects in materials and workmanship.