Quick question about lock actuators

[Derptastic]

Are the lock actuators the same for each door on my 4 door 325i, or are the rear ones different than the front?

[spdracrm3]

rears are different, #1 (front) and #27 (rear)

http://realoem.com/bmw/showparts.do?model=1413&mospid=47322&btnr=41_0582&hg=41&fg=50

[jeffnhiscars]

The drivers and front passenger doors are also different. Note that the actuator bodies are all color coded so if you find a used replacement don't worry about the PN