The 2006 X5 M54 had a partial cooling overhaul in 2015 @ 116K miles.

It is now at 142,500 miles.
The 2 radiator hoses are still fine.
But I may replace them soon.

BMW hose: ~ $85.
Rein Hose (made in Germany) ~ $26.

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1998 E39 528i 5sp MT
2006 E53 X5 3.0 6sp MT