if you get them from the dealer...the pic you posted is what you get when you order #62 11 1 368 299. See item #7 in the diagram: http://www.realoem.com/bmw/showparts...62&fg=05&hl=43 . I've never had to do this repair...but others have stated that the 6volt bulbs (the wrong ones) they've purchased came with a green base...so that indicates that the bulb and the holder come as one unit.
If you are going to "reuse" the holder...which at the low cost for the bulb from the dealer is a waste of time...iit looks like you'll have to use a soldering iron and desolder the wires to pop it out...then resolder the wires of the new bulb.