Radium Engineering coolant header tanks replace the OEM tank with a billet aluminium tank for far better looks and far better durability with improved performance. The comprehensive kit allows the tank to be installed in the original location without any further modifications required to the vehicle and in most cases the tank capacity matches the original.Replaces OEM header tankBillet aluminium construction for a professional look and excellent durabilityComprehensive kit includes all parts required to installInternal swirl feature removes access air from the coolant system improving cooling performanceSuitable for performance road cars or competition use