Four Seasons 36973 Engine Cooling Fan Clutch

Reliable Engine Cooling Fan Clutch for Heavy-Duty Vehicles

The Four Seasons Fan Clutch 36973 is engineered for severe duty applications, providing dependable engine cooling performance for a range of GM and related trucks and SUVs. Designed with durable aluminum construction, this fan clutch is compatible with popular models like the Chevrolet Silverado, GMC Sierra, and Cadillac Escalade.

• Constructed from lightweight, corrosion-resistant aluminum
• Severe duty D-type clutch designed for truck fan drives
• Non-electronic, mechanical operation for consistent performance
• Four mounting bolts with M10 x 1.5 thread size
• Compatible with multiple GM makes and models including Chevrolet, GMC, Cadillac, and Hummer
• Meets or exceeds OEM specifications for reliable fit and function
• Raw aluminum finish with hex mounting type
• Maximum clutch diameter of 6.45 inches and overall height of 3.77 inches

About the Four Seasons Fan Clutch Product Line

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 under demanding conditions, making it suitable for heavy-duty trucks and SUVs. The 36973 model exemplifies this with its robust aluminum construction and precise fitment for a wide range of GM vehicles.

Detailed Product Description

The Four Seasons Fan Clutch 36973 is a new, non-electronic engine cooling fan clutch built to handle severe duty use. Its aluminum body offers strength and resistance to corrosion, while the D-type clutch design ensures effective fan engagement to maintain optimal engine temperature. The clutch features four bolt holes and mounting holes, each with M10 x 1.5 threads, and a hex mounting type for secure installation. With a clutch maximum diameter of 6.45 inches and an overall height of 3.77 inches, this fan clutch fits a variety of GM trucks and SUVs including the Chevrolet Silverado 1500, GMC Sierra 2500 HD, Cadillac Escalade, and Hummer H2. The 36973 part number guarantees compatibility and performance that meets or exceeds OEM standards.

Common Applications and Issues Addressed

• Prevents engine overheating by regulating fan speed
• Reduces unnecessary fan drag to improve fuel efficiency
• Eliminates fan clutch slippage and noise
• Restores proper cooling system function in heavy-duty trucks and SUVs
• Solves overheating issues in vehicles used for towing or heavy loads

Installation Notes and Tips

Installation requires removal of the old fan clutch and proper alignment of the new unit using the four mounting bolts. Ensure the M10 x 1.5 bolt threads are clean and undamaged before installation. The hex mounting type allows for secure tightening with standard tools. Note that mounting hardware is not included with this part, so retain or replace bolts as necessary. Verify fitment with your specific vehicle model and engine configuration before installation.

Quality Assurance and Warranty

The Four Seasons Fan Clutch 36973 is a new, performance-rated part that meets or exceeds OEM specifications for durability and reliability. Manufactured with precision and tested for severe duty applications, it is designed to provide consistent engine cooling performance. Warranty coverage details should be confirmed with the original product documentation or supplier.