Fitment：

• 2006-2010 Mazda 5

Item Description:

• The radiator fan is a type of fan used in automobiles to cool the radiator. By doing so, it helps with regulating engine temperature. It’s, therefore, also known as the engine cooling fan and usually mounted between the radiator and engine. In some vehicles, the fan sits between the grille and the radiator.
• Radiator fans are usually a set of blades attached to a hub. The assembly can be all metal or plastic, and often made into different designs. The blades are curved or straight, long or short, and so on. A car radiator fan can also be electric and spun by an electric motor or mechanical and powered by the engine.
• Because it helps with lowering engine temperature, the radiator fan is one of the parts that constitute a vehicle’s cooling system. Other components include the radiator, water pump, thermostat, and hoses. The coolant too, which takes away heat from the engine and dissipates it in the radiator core.

How does a Radiator Fan Work?

• The radiator fan purpose is to blow air through the radiator and remove heat from the coolant. The engine produces a lot of heat, which must be removed to prevent damage. Most engines have coolant circulating and transferring the heat to the radiator. Inside the radiator, the coolant loses the heat to air.
• Mechanical Radiator fan- a mechanical cooling fan mounts on a crankshaft pulley, most often the water pump pulley. During times when the vehicle is idling or moving at a low speed, the fan comes on to blow air through the radiator. When the speed increases, the fan stops spinning or spins at a lower speed. This happens automatically through the control provided by a clutch. The clutch mechanism works by allowing the expansion of grease to engage the fan and vice versa, based on the engine temperature.
• Electric Radiator Fan- an electric cooling fan functions differently. It doesn’t need a clutch, since its switching on and off can be electrically controlled. The fan receives power through a complex wiring system consisting of relay(s), fuse, and cables.
• For automatic on and off, electric fans use a temperature switch and coolant temperature sensor. These sensors send signals to the car computer, which then determines when the fan comes on and when it goes off. Modern electric cooling fans come with a dedicated ECU or control module.
• An engine cooling fan also operates by either pushing or pulling air through the radiator. Pusher cooling fans are mounted between the radiator and grille. These are less efficient. Puller cooling fans are situated in the space between the radiator and engine. They are more effective and provide better cooling performance.