US Motor Works 22620 Professional Series Thermal Fan Clutch

The US Motor Works 22620 Professional Series Thermal Fan Clutch is engineered to deliver reliable engine cooling performance while meeting or exceeding original equipment specifications. This heavy-duty fan clutch is designed for demanding automotive applications where consistent cooling system operation is critical.

Key Features:

• High-load bearings increase durability and improve wear resistance for extended service life
• Improved shaft design provides greater strength and enhanced load capacity
• Smooth surfaces reduce stress risers and lower material stresses during assembly
• CNC-machined, tapped, and drilled mounting surfaces help prevent leaks and ensure proper fitment
• Full surface contact for all interference fits with staked end for anti-rotation
• ISO 9001:2015 certified manufacturing ensures consistent quality and performance

This thermal fan clutch regulates airflow using precision-engineered silicone fluid and temperature controls to maintain optimal engine temperature while reducing engine drag. The Professional Series is constructed from high-quality materials and features advanced research and design to create a superior cooling solution for today's vehicles.

Specifications:

• Thread Diameter: 5/16-18
• Spring Type: Coil
• Rotation: Reverse
• Bolt Hole Quantity: 4
• Bolt Circle Diameter: 3.25 inches
• Flange Diameter: 1.44 inches
• Hardware Included: 4 bolts and 4 washers

Cross-Reference Part Numbers: ACDelco 1540335, Hayden 2901, Four Seasons 46020, NAPA 271622, Imperial 215144, GMB 9202250, and various OEM numbers.