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A winding highway takes a turnA winding highway takes a turn

On-Highway Drives LCX Viscous Fan Clutches for On-Highway Vehicles

Viscous fan clutch lcx 230

From the global engine cooling pioneer comes the most cutting-edge, heavy-duty fan drive yet. Designed specifically for over-the-road and vocational trucks, the LCX230 and LCX170 feature a durable, live center, industry-leading low-speed controllability, lower off speeds and Cold-Start Disengagement (CSD™) technology.


  • Heavy-duty trucks
  • Medium-duty trucks
  • Vocational trucks
  • Buses
  • Specialty on-highway vehicles
  • Variety of off-highway equipment

LCX230 Specifications

Maximum torque
230 N-m [2,035 in.-lbs.]
Fan blade capacity
Configurations of 6-13 blades
711-864 mm [28 – 34 in.] diameter
Engine horsepower range
300-522 kW [400-700 hp]
Drive mass
9 kg [19.8 lbs.] (depending on the shaft)
Drive diameter
275 mm [10.83 in.]
12v and 24v
Typical engine displacement
10-15 L

LCX170 Specifications

Maximum torque
170 N-m [1,504 in.-lbs.]
Fan blade capacity
Configurations of 6 – 13 blades
610-813 mm [24-32 in.] diameter
Engine horsepower range
150-335 kW [200 – 450 hp]
Drive mass
8.5 kg [18.7 lbs.] (depending on the shaft)
Drive diameter
249 mm [9.8 in.]
12v and 24v
Typical engine displacement
6-12 L

Features & Benefits

  • CSD ensures more efficient operation and low fuel consumption
  • Maximum fuel efficiency and available engine power with less noise
  • Excellent controllability and lower off speeds
  • Fully-variable operation cools engine only as needed, reducing noise and parasitic loss while optimizing fuel economy
  • Maximum uptime and long life
  • Maintenance-free
  • High-quality bearing and durable design

Video of Product

The LCX's unique reservoir design prevents engagement at startup, reducing noise and enhancing engine and cab warmup -- especially during cold weather. Its low-speed controllability maximizes fuel efficiency and horsepower while reducing noise with smooth modulation.

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