Upgrading or replacing your coolant overflow tank? This aluminum alloy reservoir is a sturdy and reliable option. It has a 2-liter capacity, which is standard for many vehicles. The entire tank is made from aluminum alloy, which is great for durability, heat dissipation, and corrosion resistance compared to plastic tanks. It's fully TIG welded, which is a high-quality welding method that creates strong, leak-proof seams. The cap is designed to seal tightly, featuring a threaded connection with an O-ring gasket to prevent any coolant from leaking or evaporating. It has universal mounting points, so it's designed to fit a wide range of cars, trucks, and SUVs (commonly listed for brands like Toyota, Honda, Nissan, etc., but always double-check dimensions and port locations). The main inlet port has an inner diameter of about 36mm (1.42 inches). Replacing a cracked or failing plastic tank with this metal one can be a more permanent solution. It helps maintain proper coolant system pressure and temperature. Just make sure you have the space in your engine bay and that the hose connections match up for your specific application.