Four Seasons 36966 Engine Cooling Fan Clutch

Thermal Fan Clutch for Ford Ranger and Mazda B-Series

Restore proper engine cooling control with the Four Seasons Fan Clutch 36966. This standard-duty thermal fan clutch uses an aluminum construction, standard rotation, and a flange mount to support consistent fan engagement in the cooling system.

Compatible With Ford Ranger, Mazda B2500, Mazda B2300, Ford F-100 Ranger, Ford Aerostar, Chevrolet Astro, GMC Safari, and Ford Thunderbird applications listed below, this Four Seasons 36966 replacement is built for standard-duty service and meets or exceeds OEM requirements.

Key Features

• Thermal, non-electronic fan clutch for engine cooling control
• Standard rotation design
• Aluminum body with raw aluminum finish
• Flange mounting style with 4 bolt holes and 4 mounting holes
• 5.85 in. clutch maximum diameter
• 4.88 in. fan bolt circle, 124 mm
• 2.4 in. distance from clutch to mounting flange
• Meets or exceeds OEM specifications
• New, performance-rated standard-duty design

Product Details

The Four Seasons Fan Clutch line focuses on dependable cooling-system service parts for everyday repair work. Part number 36966 is a thermal engine cooling fan clutch with a 5" and 6" import-style application profile, making it a direct-fit solution for select Ford Ranger and Mazda B-Series trucks, along with other listed vehicles. The aluminum housing, standard rotation, and flange mount help maintain proper fan drive response as engine temperature changes.

This part cross-references Gates 22010 for the same application.

What It Helps Fix

• Engine overheating caused by a worn fan clutch
• Fan engagement that is too early or too late
• Reduced cooling performance at idle or low speed
• Excessive fan noise from a failing thermal clutch
• Cooling-system drivability issues on Ford Ranger and Mazda B2500/B2300 applications

Installation Notes

• Verify standard rotation before installation.
• Confirm flange mount dimensions, pilot depth, and fan bolt circle match the original unit.
• Mounting hardware is not included.
• Use the vehicle’s cooling-system service procedure and torque specifications during installation.
• Check fan blade condition and surrounding components before reassembly.

Quality Assurance

Four Seasons 36966 is a new, performance-rated fan clutch that meets or exceeds OEM requirements. It is built as a standard-duty thermal replacement for select Ford, Mazda, Chevrolet, and GMC applications, including 1998-2001 Ford Ranger, 1998-2001 Mazda B2500, and 1994-1997 Mazda B2300 listings.