Mishimoto Radiators - Performance: 

The Mishimoto Mazda Miata Fan Shroud Kit will considerably improve engine cooling functions and the overall performance of your vehicle. All Mishimoto fan shrouds are significantly lighter than standard fan shrouds. A Mishimoto fan shroud will effectively drive out heat from the engine bay and deliver a significant amount of cooler air directly to the Miata aluminum radiator. At the same time the fan shroud serves another very important purpose: securing the fan blades. The fan shroud will keep the fan blades in place, which otherwise could potentially damage other essential components in your engine.

All Mishimoto aluminum fan shrouds include an adhesive protective strip. This adhesive-backed foam strip seals any remaining gap between the fan shroud and radiator so that the fans are only moving air that has passed through the radiator core as opposed to pulling in air from the engine bay, resulting in improved cooling efficiency.