Overflow Tank - Professional and practical design. Easy to carry and use as an overflow reservoir for the cooling system. Easy Installation - Direct replacement and ready to install straight out of the box. Suitable as a radiator bottle or radiator expansion tank replacement. Expansion Tank - After strict inspection to ensure high quality, it can be used after inserting the matching components. Functions as a coolant tank within the system. Coolant Tank - Adopts precision production to deliver stable characteristics and high reliability. Acts as an expansion tank for the cooling system. Use scenarios - Replacing a worn or damaged radiator expansion tank in your vehicle during a cooling system service. - Upgrading or refurbishing the coolant reservoir with a direct replacement part. - Installing as a compatible coolant tank when matching components are prepared for the system.