Four Seasons 36974 Engine Cooling Fan Clutch

Reliable Engine Cooling for Ford Trucks and Vans

The Four Seasons Fan Clutch 36974 is designed to maintain optimal engine temperature in Ford vehicles such as the Bronco, F-150, and E-350 Econoline. Engineered with durable aluminum, this engine cooling fan clutch ensures consistent performance under standard operating conditions.

• Constructed from lightweight, corrosion-resistant aluminum
• Compatible with Ford Bronco, F-150, F-250, F-350, and Econoline models
• Standard use type with non-electronic, B-type clutch design
• Four bolt holes and mounting holes for secure installation
• Meets or exceeds OEM specifications for reliable fit and function

Four Seasons Fan Clutch Product Line Overview

The Four Seasons Fan Clutch line offers a range of engine cooling fan clutches designed to provide dependable temperature regulation for various vehicle makes and models. The Fan Clutch 36974 is part of this line, featuring a non-thermal and standard thermal clutch type that balances cooling efficiency and durability. This product line focuses on quality materials and precise fitment to support engine longevity and performance.

Technical Specifications and Features

This engine cooling fan clutch features a 7.2-inch maximum diameter and a 1.25-inch distance from clutch to mounting flange, ensuring proper alignment and operation. The clutch rotates in a reverse direction and uses a hex mounting type with a 5/16-18 bolt thread. The overall height is 2.83 inches, and the mounting diameter measures 1.44 inches (36 mm). The fan bolt circle diameter is 3 inches (76.2 mm), and the clutch includes four bolts for secure attachment. This new, non-electronic clutch is performance rated and designed to meet the demands of Ford trucks and vans.

Common Applications and Problem Solving

• Prevents engine overheating by regulating fan speed
• Reduces unnecessary fan engagement to improve fuel efficiency
• Eliminates fan clutch slippage or failure symptoms
• Restores proper cooling system function in Ford Bronco and Econoline models
• Addresses noisy or inconsistent fan operation in F-150 and F-350 trucks

Installation Notes and Tips

Installation requires removal of the existing fan clutch and proper alignment of the four bolt holes. Note that mounting hardware is not included, so ensure you have the correct bolts matching the 5/16-18 thread specification. The hex mounting type facilitates secure fastening. Verify the clutch rotation direction (reverse) to match your vehicle’s cooling system requirements. Always follow manufacturer torque specifications to avoid damage.

Quality Assurance and Warranty

The Four Seasons Fan Clutch 36974 is a new, performance-rated part that meets or exceeds OEM standards for fit and function. Manufactured from aluminum for durability and corrosion resistance, this clutch is designed to provide reliable engine cooling performance. While specific warranty details are not provided, Four Seasons products typically come with a limited warranty covering defects in materials and workmanship.