BMW Cooling System O-Ring Kit E46 M3 S54 3.2 Radiator Coolant Hose Sensor Set

3 Series e46. But don't waste money buying a new sensor or unnecessarily replacing hose assemblies, all of which can last well beyond 10 years/150,000 miles. All the green o-rings in our kits are peroxide cured EPDM, which we use in the most vulnerable locations for its excellent high temperature performance (150C/300F) and chemical resistance to glycol based coolants.