BMW Genuine Coolant Water Hose - From Expansion Tank (Upper Fitting) 550i 550i 650i 650i 650i 650i BMW Genuine Coolant Water Hose - From Expansion Tank (Upper Fitting) This part is used in Cooling system coolant hoses -- Cooling System Water Hoses -- Cooling water hoses -- Manufacturer Warranty: 24000 miles or 2 years Please see Product Description below for vehicle compatibility