Four Seasons 36987 Engine Cooling Fan Clutch

Reliable Engine Cooling Fan Clutch for Chevrolet and GMC Vehicles

The Four Seasons Fan Clutch 36987 is engineered to provide dependable cooling performance for a range of Chevrolet and GMC trucks and SUVs. Designed for severe duty applications, this aluminum fan clutch helps maintain optimal engine temperature under demanding conditions.

• Constructed from durable aluminum for long-lasting use
• Severe duty design suitable for heavy truck and SUV cooling needs
• Flange mounting type with 4 bolt holes (M10 x 1.5 thread)
• Non-electronic, mechanical operation for reliable performance
• Compatible with multiple Chevrolet and GMC models including Blazer, C10, K20, and Suburban series

Four Seasons Fan Clutch Product Line Overview

The Four Seasons Fan Clutch line focuses on providing engine cooling components designed to meet or exceed OEM specifications. This product line emphasizes severe duty and truck fan drive applications, ensuring that vehicles operating under heavy loads or harsh conditions maintain proper cooling efficiency. The 36987 model is part of this line, offering a robust and performance-rated solution for Chevrolet and GMC trucks and SUVs.

Detailed Product Description and Specifications

The Four Seasons Fan Clutch 36987 features a raw aluminum finish and a flange mounting type with four bolt holes, each threaded M10 x 1.5. It has a clutch maximum diameter of 6.45 inches and an overall diameter of 163.8 mm, with a height of 3.66 inches (92.9 mm). The clutch operates with a reverse rotation and is designed for severe duty use, making it suitable for heavy-duty truck fan drives. This non-electronic clutch includes a pilot depth of 0.63 inches and a pilot diameter of 0.75 inches, ensuring precise fitment and reliable operation. Mounting hardware is not included, so appropriate bolts should be sourced separately.

Applications and Common Issues Addressed

• Prevents engine overheating in Chevrolet and GMC trucks and SUVs
• Replaces worn or failing fan clutches causing poor cooling performance
• Eliminates excessive fan noise due to slipping or stuck clutches
• Restores proper fan engagement for improved fuel efficiency and engine life
• Supports severe duty cooling needs in heavy load or towing scenarios

Installation Notes and Tips

• Ensure compatibility with your specific Chevrolet or GMC model before installation
• Use proper torque specifications for the M10 x 1.5 bolts to secure the flange mount
• Inspect the fan blades and surrounding components for damage during replacement
• Verify the clutch rotation direction matches your vehicle’s requirements (reverse rotation)
• Mounting hardware is not included; obtain appropriate bolts separately

Quality Assurance and Warranty

The Four Seasons Fan Clutch 36987 meets or exceeds OEM standards for severe duty applications. It is a new, performance-rated part designed to provide reliable engine cooling for Chevrolet and GMC trucks and SUVs. While specific warranty details may vary, Four Seasons products typically come with a limited warranty covering defects in materials and workmanship to ensure customer confidence in product durability.