For the 2005 BMW X3, the supplied fitment data lists a D2S bulb for the low-beam headlights. No high-beam bulb is provided in the available data, so confirm the original bulb before ordering a replacement. The fog-light options are listed as H11 LED and H16 LED; compare the existing fog-light connector and housing before choosing between them.
- Front turn signals may use 7506 or 7507. The data identifies these as separate options, so compare the original bulb before purchase.
- Reverse lights use 7506, while rear turn signals use 7507.
- Brake lights are listed as 7506R; the center stop and tail lights are listed as integrated LED units.
- Parking and front side-marker lights may use 2825 or 98.
- Interior fitments include 6418 for the courtesy and dome lights, 6486X for map lights, and 6411 or 6428 for the trunk light.