Four Seasons 46038 Engine Cooling Fan Clutch

Four Seasons 46038 Severe Duty Fan Clutch

The Four Seasons 46038 is a thermal engine cooling fan clutch built for severe-duty and truck fan drive applications. It uses an aluminum housing, a standard rotation layout, and a non-electronic design to help maintain consistent fan engagement in demanding cooling systems.

Key Features

• Four Seasons Fan Clutch line, part number 46038
• Thermal, non-electronic fan clutch for engine cooling control
• Severe duty and truck fan drive style
• Aluminum construction with raw aluminum finish
• 6-bolt, 6-hole mounting pattern with HEX mounting type
• Fan bolt circle: 6 in. / 152.4 mm
• Clutch maximum diameter: 7.4 in. / 188 mm
• Overall height: 3.53 in. / 89.7 mm
• Meets or exceeds OEM requirements
• New, performance-rated replacement part

Detailed Description

Four Seasons 46038 is a severe-duty thermal fan clutch engineered for engine cooling fan control in truck and heavy-duty cooling systems. The aluminum body, 7.4-inch clutch diameter, 1.88-inch mount diameter, and 1.18-inch pilot diameter support a precise fit in applications that use a 6-inch fan bolt circle and 5/16-18 threaded holes. This part number is also referenced in aftermarket catalogs for the same application, including Dorman 46038 and US Motor Works 22608.

As part of the Four Seasons Fan Clutch line, this unit is built for direct replacement use where a thermal fan clutch is required. It is a practical choice for cooling system service on vehicles such as Ford F-150 and Chevrolet Silverado applications that call for this style of severe-duty fan drive. Four Seasons 46038 is also listed under cross-reference part numbers 172286 and 182286 for the same application.

What It Helps Address

• Fan clutch slip that reduces airflow through the radiator
• Cooling fan engagement issues in thermal clutch systems
• Engine temperature rise during towing or heavy-load operation
• Noisy or inconsistent fan drive operation
• Replacement needs for worn severe-duty truck fan clutches

Installation Notes and Tips

Verify the fan bolt circle, pilot diameter, mount diameter, rotation, and overall height before installation. This unit uses 6 bolt holes, a HEX mounting type, and 5/16-18 hole threads; mounting hardware is not included. Confirm that the vehicle uses a standard-rotation, thermal, non-electronic fan clutch before ordering. For fitment-based searches, use phrases such as “Fits 2006-2011 Ford F-150, front” or “Fits 2007-2013 Chevrolet Silverado, front” only when those exact applications match your vehicle lookup.

Quality Assurance

This Four Seasons fan clutch is a new replacement part that meets or exceeds OEM requirements and is performance rated for severe-duty service. The aluminum construction and thermal design support consistent cooling-system operation in applications that require a truck fan drive clutch.