I had no visible coolant leak from that pipe, but I still replaced it with the collapsible from pipe from AGA. Once the old one removed, I realized it was only a matter of time until it would totally fail. About 1/2 of the circumference of the vulcanized O-ring was loose, and where it was loose it started to develop corrosion underneath. Car had about 100 k miles.

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Stable: e92is, e46 M54B25, e83 N52, e53 N62 - sold, e39 M54B30 R.I.P.