What are Radiator Shrouds and What Do They do?

The radiator shroud is a piece of metal or plastic that fits snugly around your radiator. The shroud has a space in the center for the fan blades. From this position, the radiator shroud can channel air through the fan blades and prevent air from leaking to the sides of the radiator.

The radiator shroud prevents the air from recirculating around the fan. It's usually a plastic hood that encloses the fan to guide the air through the core and stop it from coming back through the fan again. It protects you from fan blades, too. The plastic cover tends to break or lose, so it's worth checking and making sure you 're careful when you're working on the engine. If the fan that pulls air through the core of the radiator to cool the engine coolant is too far back, it will end up recirculating the same hot air that was collected behind the radiator. The radiator often has a shroud for this reason.

What does a Radiator Shroud do?

  • Cooling Function - The fan shroud channels the flow of air toward the radiator to help keep the coolant cool. Operating a vehicle with a broken or damaged shroud can lead to overheating of the engine.
  • Safety Function - The shroud also protects the fan blade against debris entering and damaging the fan. It contributes to personal safety by preventing injury from accidental contact with the fan by the body.
  • Noise Reduction - Noise is reduced by a fan shroud. The shroud reduces turbulence, allowing for smoother air flow through the cooling system, thus reducing noise.

If you want painted examples, an unshrouded fan moves air through only the portion of the radiator equal to the surface area of the fan. See where this is going? If you a week rebuilding your classic engine, would you really want to fry it because you didn't think that shroud was needed?

You may think that a shroud is a useless piece of plastic or metal, but it really does serve a purpose. They focus airflow through the entire radiator compared to the area covered by the traditional ventilator, creating a vacuum that pulls air through the entire surface of the radiator, thus increasing cooling.

Vivid Racing carries Radiator Shrouds from Greddy, Perrin, ARC, Cusco, APR, GTSPEC, and more. Buying from Vivid Racing is the best choice you can make. We back every part we sell with our guarantee of satisfaction. Hands-On Experience and Professionalism is what makes us the best.

Buy online or give one of our world-class sales professionals a call at 1-480-966-3040 If you don't see what you are looking for.