Radiator fan clutch

The radiator fan clutch, also known as a viscous coupling, is an important component of the engine cooling system in many vehicles with a mechanical radiator fan. It controls the fan speed depending on the engine temperature and ensures that the engine is always adequately cooled.

The coupling is located between the engine drive and the radiator fan and operates using a special silicone fluid. At low engine temperatures, the coupling remains partially disengaged, causing the fan to run slower or not at all. As the temperature in the engine compartment rises, the viscosity of the fluid changes, and the coupling connects the fan more firmly to the drive. This causes the fan to spin faster and increases cooling performance.

This system ensures that the radiator fan only operates at full power when additional cooling is required. This reduces energy losses and makes the engine run more efficiently.

A faulty radiator fan clutch can cause the fan to run continuously or not rotate sufficiently. This can lead to either unnecessary power loss or engine overheating.

At Autoteile Gossau, you'll find radiator fan clutches in original equipment and high-quality aftermarket versions for numerous vehicle makes and models. Benefit from the lowest prices in Switzerland, fast delivery, or pick up your order directly from our store in Gossau and pay conveniently by cash or card.