BMW Cooling System O-Ring Kit X5 3.0si E70 N52N Radiator Coolant Hose Sensor Set

X3 X5: e83, e53, e70. 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 & low temperature performance (-30C/-22F-150C/300F), resistance to compression set, and chemical resistance to glycol based coolants.

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