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Flex-A-Lite Variable Speed Controller – 123241



Flex-A-Lite Variable Speed Controllers

Flex-A-Lite variable speed controllers attach on or near the electric fan, sensing coolant temperature via a radiator probe or temperature sending unit. They set fan speed from 60 to 100 percent, depending on the built-in thermostat’s setting. The thermostats have a range of 160 to 220 degrees F. The variable speed controllers allow greater control over engine temperature, which helps to reduce charging spikes and current load on the charging system. They will keep the fans running for 30 seconds after your vehicle is turned off.

This is hands down a far superior way to control ANY electric fan system. The fans come on slow, and only increase in speed if temps require it to… This equates to more consistent engine temps and less battery drain over the standard ON/OFF style fan controllers.


Brand: Flex-a-lite
Manufacturer’s Part Number: 123241
Part Type: Fan Switches
Product Line: Flex-A-Lite Variable Speed Controllers
Thermal Switch Style: Fan control kit
Sending Unit Style: Radiator probe
Sending Unit Included: Yes
Fan Quantity: Single/Dual
Adjustment Range (degrees F): 160-220 degrees F
Relay Included: No
Wiring Harness Included: Yes
Manual Override Switch Included: No
Air Conditioning Relay Included: No
Quantity: Sold as a kit.
Notes: Variable speed control allows fan speed from 60 to 100 percent, depending on built-in thermostat setting. Rated at 45 amps.


Flex-a-lite Consolidated warrants to the original purchaser that all Flex-a-lite products will be free from defects in material and workmanship for a period of one year from the date of purchase.