Expansion tank for coolant and overflow reservoir - Material and durability: Made of high grade plastic, this expansion tank is designed to withstand high and low temperatures for reliable long-term use. - Function and benefits: Serves as the radiator expansion tank and overflow reservoir, helping maintain correct coolant pressure and providing space for coolant expansion. - Easy installation: Direct replacement and ready to install straight out of the box. Uses the vehicle’s original hardware and plugs into the radiator system without modification. - Compatibility and fit: Designed as a radiator expansion tank and overflow reservoir that integrates with the existing cooling system. No special adapters required when used with the original components. - Quality control: Subjected to strict inspection to ensure fit and performance. It is ready for use after inserting the matching components. Use scenarios - Replacing a cracked or leaking coolant reservoir on a vehicle where the original hardware is retained. - Replacing aging or degraded expansion tanks to restore proper cooling system function in fleets or personal vehicles. - Maintenance or refurbishment of vehicles that require a standard radiator bottle and overflow reservoir with compatible hardware.