I have been missing mine for ever... I am about to change my oil again, and figured I would spend the 12$ for a new one off of ECS tuning. Do I need both of these parts? Thanks.
Drain Plug Access Door:
http://www.ecstuning.com/BMW-E82-135...3.0L/ES130629/
Rotery Clip:
http://www.ecstuning.com/BMW-E82-135...Body/ES130659/