Luke,
I replaced mine, from memory it was back in 09 and you had to buy the full intake pipe with the black seal. The intake pipe was updated with a new seal...I think there were some changes to the where the black seal fits.
I found this info, it has the part number:
http://www.crdsite.com/turbo-seal-oil-leak-fix.html
I got mine from morris 4x4 in the USA