BMW Cooling System O-Ring Kit Set X3 30i 2017-2020 G01 B46 Radiator Heat Hose
But don't waste money buying a new sensor or unnecessarily replacing hose assemblies, all of which can last well beyond 10 years/100,000 miles. X3 X5 e83, e53, e70. These o-rings seal the BMW press & clip hose connections.