rvetter

I have an R350 and am in the process of replacing all the interior bulbs with "xenen-like" interior bulbs, which will offer a brighter white look. I am unsure however which bulbs exist in the vehicle. From the Sylvania site, I have determined the following:

Map Light: 2886x
Dome Light: 2886x
Step/courtesy: 6418
Cargo: 2825

Does anyone have any additional information? A comprehensive list of part numbers and quality would be ideal.

At the very least, does anyone know the precise size of the 6418s? They come in 31, 36, 39, and 44mm.

Help please!!!