I got this from Germany (free express postage) says its OME
http://www.ebay.co.uk/itm/LAND-ROVE...500814?hash=item280620bd8e:g:xDcAAOSwLVZV1s43
I need it asap, or I am truly screwed, the last one I had was OME too but just lasted over 2 years, I expected it to last longer than that, and I have had no problems with air leaking or anything like that, so this might or might not be OME but thats not to say its any worse than an OME part, and it just £150 which isn't too bad OME is crazy ££, and it come with the filters too, it all adds up its from a German manufacturer as well so should be ok quality
http://www.arnotteurope.com/default.aspx
I think they make the bags as well?