The normal functions of a car generate an enormous amount of heat, this is obvious by the amount of effort that is put into keeping the car cool. There is no more important device aimed at cooling, however, than the car heat shield. Effective car heat shields protect the various other mechanics of the vehicle from the immense heat generated by the engine and exhaust, without which many of these parts could be damaged and even melt. The driver also obviously requires protection from the heat.
There are a few car heat shields found in a vehicle, ranging in both size and location. Many are focused around the exhaust system and fairly easy to spot. In order to replace a car heat shield it must simply be removed and replaced with an equivalent, which is not a difficult task in most vehicle models. In some models, however, removing a car heat shield requires removing a number of other parts, which can be difficult and time consuming. Keep in mind though that since the device is very simple it very rarely, if ever, requires replacing, unless the vehicle has been in an accident.
Although some savvy DIY car mechanics are known to go as far as making their own car parts, others prefer to purchase manufacturer-created products, meaning that the right car heat shield for the vehicle must be tracked down. This can be difficult with older model cars, especially those no longer supported by the manufacturer. In this case it is recommended to contact second-hand car part suppliers and scrap yards. Also, be sure that the part is correctly fitted if doing a DIY job, as improperly secured car heat shields are known to rattle at high speeds.