Features: 1.High performance overflow catch tank, mainly designed to accelerate the heat dissipation of the water tank and eliminate the water bubbles by pressuring. Increases horsepower, keep operational temperatures. 2.When the coolant pressure in the radiator exceeds the pressure cap setting, the coolant is sealed through the pressure cap and flows through the overflow tube into the radiator coolant overflow tank. 3.Tight closed cap, fully Tig welded and thread come with o?ring gasket, keep a good closed environment and prevent coolant leakage. 4.Expansion tank made of quality material for enhanced strength, anodized polished and durable, better than plastic material. 5.The radiator coolant overflow tank saves you money by preventing rust in the car's cooling system. Specification: Condition: 100% brand new_x000D_ Item Type: Overflow reservoir_x000D_ Material: 6061 T6 aluminum alloy_x000D_ Color: As pictures shown_x000D_ Capacity: 800ml_x000D_ Application: Suitable for all vehicles PackageList: 1 x Water Tank1 x Oil Pipe1 x Cover Clip2 x Clamp2 x Screw2 x Nut2 x Bracket