Genuine OEM Citroen Expansion Tank Coolant Union, part number 9830668280. This component is essential for connecting the coolant expansion tank to the vehicle's cooling system, facilitating the circulation of coolant. It is designed to withstand the pressures and temperatures within the cooling system. Constructed from high-quality rubber and plastic materials for durability. Genuine OEM parts are manufactured to precise specifications, guaranteeing correct fitment and reliable performance in the cooling system.