It so confusing nowadays. I called the local vw part stockist n check against my vin number, their system show BM is the latest.
Not sure if any difference between Gti from different region as mine is mk7.5 with MPI made in Germany.
What about R vs Gti...
My post already explained that. BM is the latest revision for GTI, and used to be the latest for the R and S#, but BL is the latest for R and S3. BL also fits the GTI, even though not listed as a replacement by the factory, and has stopped some of the track related smoking for quite a few of us in GTI's and R's, though not all.
It's not confusing. Get the BL version if you are keeping the factory PCV. If you're tracking, get a CC too.