[bmwgamer913]

Has anyone had an issue where the top radiator hose will not seal on the m54 engine. I have coolant leak that only happens when my x3 is off. I replaced the upper rad hose and coolant expansion tank and it still leaks from the same spot. Is it possible the top radiator hose connector is warped on the radiator. Any input is helpful

[fandu]

I just changed mine today (hose, thermostat and water pump). Where exactly is it leaking from? Joint between expansion tank and hose or thermostat and hose?
I was watching a video where the new hose they installed was still leaking so they ended up getting a Rein branded hose which worked fine.

[heifetz17]

I had this same problem and went through 3 Autozone hoses before one would actually seal. Make sure you're using an oem hose and make sure it's seated tight when locked into place.