HT650 On/Off Pneumatic Fan Drive
The HT650 On/Off Pneumatic Fan Drive engages only when cooling is needed, resulting in reduced horsepower and fuel consumption.
In the off mode, the HT650 completely disengages. The HT650 is engine controlled, providing the best possible response time. When engaged, the HT650 can deliver the maximum torque required by high-airflow capacity fans, without slipping.
Applications
- Heavy-duty trucks
- Medium-duty trucks
Features & Benefits
- Engine-controlled design engages only when needed for increased efficiency and fuel conservation
- Provides maximum torque for high-airflow fans without slippage for optimum engine cooling
- Design and operation allows increased available horsepower
Read more at Horton.

Horton Fan Drives

S & HTS Fan Drives
Made in Melbourne Australia. The hub bearing assembly makes the S & HTS perfect for high run time applications.

DM Advantage On/Off Fan Drive
DM Advantage On/Off Fan Drives are spring-engaged and air-disengaged for maximum efficiency.

DM Advantage Two-Speed Fan Drive
Horton DM Advantage Two-Speed Fan Drives alternate between eddy current and spring-actuated cooling.

RCV250 Fully Variable Fan Drive
Lighter with a compact design, Modulator™ RCV250 Fully Variable Fan Drives are engineered to turn larger fans that require higher torque.

HT650 On/Off Pneumatic Fan Drive
The HT650 On/Off Pneumatic Fan Drive engages only when cooling is needed, resulting in reduced horsepower and fuel consumption.

EC450®/EC600™ Fan Drives
The electromagnetically-engaged series offers no-slip operation for quick response to cooling requirements such as in medium-duty trucks and buses.

Stratis Viscous Fan Drive
Designed to cool new hotter-running reduced emission engines, can be managed by the engine’s electronic control unit for precision fan speed control.

VMaster Air Sensing Viscous Fan Drive
Viscous fan drive utilising a bimetal precision sensor which modulates fan speed based on temperature of air through the cooling package.

Klondike Fan Drives
The Klondike Series line of Fan Drives allows you to benefit from Horton’s industry leading customer service and quality even if you are running our competitor’s Fan Drive in your fleet.