SPAL Brushed Fan Thermo-Switches

SPAL Thermo Switches 

Features

• Designed for reliable on/off fan control in electric cooling fan systems

• 3/8″ NPT thread for easy installation in radiators, engine ports, or adapters

• Available in multiple temperature ranges to suit different cooling strategies

• 165-185°F

• 175-195°F

• 165-185°F two-wire switch

• Durable, high-quality construction for consistent switching performance

• Compatible with SPAL fans, relays, and most aftermarket cooling systems

SPAL thermo switches provide a simple and dependable solution for controlling electric cooling fans based on coolant temperature. With precise temperature activation and a proven mechanical switching design, these switches help maintain stable operating temperatures without unnecessary fan cycling.

Available in multiple temperature ranges and wiring configurations, SPAL thermo switches allow you to tailor fan operation to your specific engine and cooling system needs. Whether you’re building a street car, performance vehicle, or demanding custom setup, these switches deliver reliable control and long-term durability trusted in high-performance cooling applications.