Horton HT650 On/Off Pneumatic Fan Clutch Drive 991451

Select Mack® Applications : E7 Series Engines. Fan Clutch (2.56" Hub Diameter) (5.00" Fan Pilot Diameter) (4.74" Height) (7.45" Diameter) (26.00" Maximum Fan Diameter) (Style 3 in Chart). OEM Reference : Mack 48MH410, 40MH410A, 40MH410, 40MH48, 3912-991435, 3912-991439, 3912-991451, 3912-981446, 25171842.

Mack Elite, Fleet-Liner, Value-Liner 1994-1997.

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