The Radium Engineering coolant tank is designed to replace the plastic OEM tank and provides an additional 160 ml of fluid volume. The coolant tank is constructed from billet 6061 aluminium as a 2-piece design. The internal design incorporates a swirl feature to deaerate the hot pressurized coolant from the cylinder head. The coolant tank is fixated with an aluminium mounting bracket. The pressure cap is manufactured from stainless steel with a race proven high pressure valve. The 21.8 psi relief provides a boiling point increase, permitting improved cooling efficiency.