Four Seasons 36901 Engine Cooling Fan Clutch

Four Seasons 36901 Fan Clutch Overview

Four Seasons 36901 is a standard-duty thermal engine cooling fan clutch built with an aluminum body and a standard rotation layout. It is a non-electronic, flange-mount fan clutch that meets or exceeds OEM requirements and is performance rated for direct replacement use on select Jeep, Chevrolet, and GMC applications.

For Jeep Wrangler, Cherokee, CJ7, CJ5, Scrambler, and Comanche applications, as well as Chevrolet S10/S10 Blazer and GMC S15/S15 Jimmy models, this fan clutch supports proper fan engagement for engine cooling control. The Four Seasons Fan Clutch line is focused on OE-style cooling system service parts, and part number 36901 follows that approach with standard-duty construction and thermal operation.

Key Features

• Part number: 36901
• Standard-duty thermal fan clutch
• Non-electronic design
• Aluminum construction with raw aluminum finish
• Standard rotation (STD)
• Flange mounting type
• 4-bolt / 4-mounting-hole design
• Meets or exceeds OEM specifications
• Performance rated
• New replacement part

Detailed Product Description

This Four Seasons 36901 engine cooling fan clutch uses a thermal design to regulate fan engagement based on operating temperature, helping maintain consistent cooling performance in everyday driving and demanding conditions. It features a 5.99-inch clutch diameter, 3.11-inch overall height, 1.53-inch distance from clutch to mounting flange, and a 2.6-inch mount diameter. The fan bolt circle measures 3.25 inches, and the bolt thread is 5/16-18 hole.

Built from aluminum and finished in raw aluminum color, this standard-duty fan clutch is a direct-fit style replacement for select 1980-1990 Jeep models and 1982-1985 Chevrolet and GMC compact truck applications. This part cross-references Monroe Shocks & Struts 5562 for the same application.

What It Helps Address

• Engine cooling fan not engaging at the proper temperature
• Excessive fan noise from a worn clutch
• Cooling performance loss in stop-and-go driving
• Overheating concerns tied to fan clutch wear
• Inconsistent fan speed control on thermal systems

Installation Notes and Fitment

Compatible With 1987-1990 Jeep Wrangler, N/A; 1984-1987 Jeep Wagoneer, N/A; 1984-1986 Jeep Cherokee, N/A; 1980-1986 Jeep CJ7, N/A; 1986 Jeep Comanche, N/A; 1981-1985 Jeep Scrambler, N/A; 1980-1983 Jeep CJ5, N/A; 1985 Chevrolet S10, N/A; 1982-1985 Chevrolet S10, N/A; 1985 Chevrolet S10 Blazer, N/A; 1983-1985 Chevrolet S10 Blazer, N/A; 1985 GMC S15, N/A; 1982-1985 GMC S15, N/A; 1985 GMC S15 Jimmy, N/A; 1983-1985 GMC S15 Jimmy, N/A.

Before installation, verify standard rotation, flange mounting, bolt pattern, pilot dimensions, and fan bolt circle against the original part. Mounting hardware is not included, so reuse or source the correct hardware as needed. Confirm clearance around the fan, shroud, and accessory drive before final tightening.

Quality Assurance

Four Seasons 36901 is a new, performance-rated fan clutch that meets or exceeds OEM specifications for the listed applications. Its standard-duty thermal design and aluminum construction support reliable cooling-system service on compatible Jeep, Chevrolet, and GMC vehicles.