a4 b6 b pillar crash sensor replacement (help with buying the replacement)

hi all,

after getting the airbag light come up constantly i got the car scanned to find the problem 01221 which is the drive side airbag crash sensor.

my mot is due this month and with the unfortunate timing of a few other large outlays every penny counts so i don't really want to splash out 80 pounds to the stealers for a new sensor.

ive noticed a lot of sensors on ebay that look exactly the same but vary, very slightly with the orientation of the arrow on the sticker and a letter after the part number.

i was wondering if any of these would work as a direct replacement even though there are very slight differences on the sticker?

here is my crash sensor for reference:


sorry its not the sharpest of pictures! if this was anything else other then the airbag system i would go ahead and give it a go.

here is a ebay link to a selection of crash sensors that look identical:

audi crash sensor | eBay

thanks!

interesting, i normally put some kind of fuel additive in before i go for my mot. pretty sure there are a lot, almost 1 for every airbag but i could be wrong