The 'Mishimoto'sportsft aluminum fan shroud kit, for the dual - pass race radiator, measures 22in x 18in x 3.5in.Mishimoto aluminum fan shroud kits will improve engine cooling functions and the overall performance of your vehicle.They are significantly lighter than standard fan shrouds.In maintaining your engine, it is ideal to keep it running cool, especially during those unbearably hot days.A Mishimoto fan shroud will notably improve engine cooling performance by delivering more air to the dual - pass race radiator and driving out excess heat.The fan shroud will also secure the fan blades in place, which will prevent damage to other essential components in your engine.