RYANSTAR Universal Car Radiator Coolant Tank 800ml Coolant Expansion Tank Overflow Oil Catch Tank Cooling Catch Bottle Reservoir Aluminum Billet Silver

【6061 Aluminum】Expansion tank made of 6061 aluminum for enhanced strength, anodized polished and durable, better than plastic material.. 【Prevent Coolant Leakage】Tight closed cap, Fully Tig Welded and Thread Come with O-ring Gasket， Keep a good closed environment and Prevent coolant leakage.. 【Prevent Rust】The radiator coolant overflow tank is fairly simple device but it can save you a lot of money by preventing rust formation in the cooling system of your car.. 【Keep Operational Temperatures】Radiator coolant overflow tank makes the engine coolant to keep it within the operational temperatures when the engine is running at its optimum performance.. 【Coolant Back Into Radiator】When coolant will start to cool down, it will contract in volume, a vacuum valve in the pressure cap opens allowing the coolant which was flown into the radiator coolant overflow tank back into the radiator.