The Horton DriveMaster Remanufactured Fan Clutch is designed to keep your engine running at optimal temperatures, ensuring maximum performance and longevity. The Fan Clutch is manufactured by Freightliner and is designed to detect temperature changes using a bimetallic sensor system. This ensures that your engine does not exceed certain operating temperatures, which can cause damage and reduce performance. The fan clutch is designed to stay idle in off mode and turn on as the engine temperature increases, providing reliable and efficient cooling for your engine. FleetPride is your First Click in Heavy Duty®.