This part is listed by BMW as BMW part number 17123424499 and is described as Genuine BMW Lower Radiator Hose (radiator to thermostat) that fits on 2007-2010 E83 X3 3.0i/3.0si models.
This is a Genuine BMW coolant hose with a two year warranty. Buying a Genuine part will usually be more expensive than an OEM or aftermarket brand but you are assured that it meets BMW's designs for fitment, performance, and longevity. It will also be the very latest design, incorporating any updates or revisions that an aftermarket brand typically will ignore.
BMW Fitments:
X3 Series
E83 X3 (2004-2010) > X3 3.0si N52 (2007-2010)
