Four Seasons 46090 Engine Cooling Fan Clutch

Reliable Engine Cooling Fan Clutch for Chevrolet and GMC Trucks

The Four Seasons Fan Clutch 46090 is designed to provide dependable engine cooling performance for heavy-duty Chevrolet and GMC trucks. Engineered with durable aluminum and built for severe duty applications, this fan clutch ensures optimal temperature regulation under demanding conditions.

• Constructed from robust aluminum material for durability
• Severe duty D-type clutch suitable for truck fan drives
• Non-electronic design for straightforward operation
• Four mounting and bolt holes with M10x1.500 thread size
• Compatible with Chevrolet Silverado and GMC Sierra 1500, 2500 HD, 3500, and 3500 HD models

Four Seasons Fan Clutch Product Line Overview

The Four Seasons Fan Clutch line focuses on providing reliable engine cooling components tailored for severe duty and truck applications. The 46090 part number belongs to this line, offering a non-electronic, heavy-duty fan clutch designed to meet or exceed OEM specifications. This ensures consistent performance and durability for demanding truck cooling systems.

Detailed Product Description and Specifications

This engine cooling fan clutch features a raw aluminum finish and a maximum clutch diameter of 6.45 inches (163.8 mm). It has a mounting flange distance of 2.42 inches and a hex mounting type with four bolt holes, each threaded M10x1.500. The clutch rotates in reverse direction and includes a 3.25-inch (82.6 mm) fan bolt circle diameter. With an overall height of 4.44 inches (112.6 mm), the clutch is designed for severe duty use, making it suitable for heavy-duty truck fan drives. The pilot diameter measures 1.18 inches (30 mm) with a depth of 0.7 inches (17.8 mm). This new, non-electronic fan clutch does not include mounting hardware but meets or exceeds OEM quality standards.

Common Applications and Issues Addressed

• Replacement for worn or failing fan clutches in Chevrolet Silverado and GMC Sierra trucks
• Resolves engine overheating caused by inefficient fan engagement
• Improves cooling system performance under severe duty conditions
• Eliminates fan clutch slippage and noise issues
• Restores proper fan operation for heavy-duty truck cooling systems

Installation Notes and Tips

Ensure the mounting surface is clean and free of debris before installation. Use the correct M10x1.500 bolts (not included) to secure the clutch firmly. Verify the clutch rotation direction matches the engine requirements (reverse rotation). It is recommended to inspect the fan blades and surrounding components during installation to ensure proper fitment and operation.

Quality Assurance and Warranty

The Four Seasons Fan Clutch 46090 is a new, performance-rated part that meets or exceeds OEM specifications for Chevrolet and GMC trucks. Manufactured with high-quality aluminum and designed for severe duty use, this fan clutch provides reliable engine cooling performance. Warranty details should be confirmed with the original equipment manufacturer or distributor.