Four Seasons 36996 Engine Cooling Fan Clutch

Reliable Engine Cooling Fan Clutch for Chevrolet, Ford, and GMC

The Four Seasons Fan Clutch 36996 is engineered for severe duty applications, providing dependable cooling performance for a wide range of Chevrolet, Ford, and GMC trucks and SUVs. Designed with durable aluminum construction, this engine cooling fan clutch meets or exceeds OEM specifications to ensure consistent operation under demanding conditions.

• Constructed from lightweight, corrosion-resistant aluminum
• Severe duty design suitable for heavy truck and severe use
• Non-electronic, standard rotation clutch type D for reliable fan drive
• Four bolt holes and mounting holes for secure flange installation
• Compatible with multiple Chevrolet, Ford, and GMC models including Blazer, C/K series, Econoline vans, and Suburban variants

Four Seasons Fan Clutch Product Line Overview

The Four Seasons Fan Clutch line focuses on providing durable and performance-rated cooling fan clutches designed for severe duty and truck fan drive applications. This product line emphasizes OEM compatibility and robust materials, such as aluminum, to withstand high temperatures and heavy workloads. The 36996 model is part of this line, offering a flange mounting type and a clutch maximum diameter of 6.45 inches, tailored for demanding engine cooling needs.

Detailed Product Description and Specifications

The Four Seasons Fan Clutch 36996 features a flange mounting type with four bolt holes and mounting holes, each with a 5/16-18 thread size, ensuring a secure fit. The clutch has a maximum diameter of 6.45 inches (163.8 mm) and an overall height of 3.66 inches (92.9 mm). It operates with standard rotation and is a non-electronic clutch, making it suitable for traditional mechanical fan drives. The distance from the clutch to the mounting flange is 1.63 inches, with a pilot depth of 0.63 inches and a pilot diameter of 0.75 inches. The raw aluminum color reflects its durable material construction, designed to resist corrosion and wear in severe environments.

Common Applications and Problem Solving

• Replaces worn or failing fan clutches in Chevrolet Blazer and GMC Jimmy models
• Restores proper engine cooling in Ford F-150, F-250, and F-350 trucks
• Addresses overheating issues in Chevrolet C/K series and Suburban vehicles
• Improves fan engagement for heavy-duty use in Econoline vans (E-100 to E-350)
• Ensures reliable cooling fan operation in GMC and Ford truck fleets

Installation Notes and Tips

Installation requires removal of the existing fan clutch and proper alignment of the flange mounting holes. Note that mounting hardware is not included with this part, so ensure you have the correct bolts (4 bolts, 5/16-18 thread) for secure installation. Verify the clutch rotation direction matches your vehicle’s requirements (standard rotation). 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 36996 is a new, performance-rated part that meets or exceeds OEM standards for severe duty applications. Manufactured with precision and tested for durability, this clutch is designed to provide reliable engine cooling under heavy load conditions. Warranty details should be confirmed with the product supplier or manufacturer to ensure coverage specifics.