Radiator Fan for Toyota

Mechanical or Electric
The first question to ask yourself is whether you need a mechanical or electric radiator cooling fan. Mechanical fans are further classified as clutch or flex type. Generally, you should go for a cooling fan that replaces the older one, unless if considering to upgrade to a better fan. Choose a mechanical fan for stock or slightly modified engine and electric for high horsepower or highly modified engine.

Single or Dual Fan
Most engines will do with a single fan. If you have installed a larger engine, added a turbo charger or supercharger and other modifications, a dual setup is better than a single fan. You need more air, which one fan may not produce. If considering a dual cooling fan configuration, ensure you have enough space. Some car will only have enough room for one fan. Dual configurations are also normally possible with electric radiator fans.

Push or Puller Fan
A radiator fan is usually either a push or puller type. Puller fans are better in many ways. They do not obstruct incoming air when the vehicle is moving, which means more air blowing through the radiator core. They also provide a more effective airflow owing to their position behind the radiator. But you cannot always install a puller fan in your car despite its many advantages. It depends on the availability of space. Ensure you have room between the radiator and the engine before you can consider installing one.

Straight Blade or Curved Blades
One of the main differences in the design of engine cooling is in the style of blades. The blades are normally either straight or curved. Straight blades move more air than curved blades. However, they produce a lot of noise. The curved types are quieter but move less air. When choosing the type of blades, determine what's more important for your car between airflow and quiet operation. If your engine cooling needs are higher, go for the straight blade. If not, you want to choose the quiet working of the curved blade cooling fan.

Shroud or no Shroud
Radiator fans come with either a shroud integrated or without. You can also install one. Shrouded fans offer more benefits. They move air through the radiator core more efficiently, without loss. When the fan contains no shroud, the air movement is less efficient and often leading to an overheated engine. Shrouded fan are more expensive than those without one. Be prepared to pay more for the additional benefits.

Cooling Fan Diameter
It's also important that you consider the diameter of the radiator fan or, in other words, the cooling fan size. The diameter of the fan affects its ability to move air, with larger fans providing a better cooling effect. When using a large fan, your car engine will idle for long and not overheat. You will be able to drive in slow traffic without the engine temperature rising or drive over long distances and not damage the engine. Always choose a fan that covers most of the radiator surface but allow enough clearance so the blades do not touch anything.

Current Draw
This refers to the fan's current rating. Radiator fans are usually rated by the amount of current they operate on. A higher current means a more powerful fan- and better cooling performance. If you're looking for a fan to help cool a large or modified engine, choose a fan with a high enough current rating or amp draw. This will often be indicated by the manufacture among the specifications and features of the particular fan.