F series BMW models ran from 2011 to 2019.
The difference is if you have a pneumatic wastegate turbo (pwg) or an electric wastegate turbo (ewg).
The pwg turbo has the smaller outlet and the ewg has the larger outlet.
Generally speaking 2013 and prior f series n55 have pwg. And the newer 2014+ models have the ewg.
The only question is if you have a early 2014 build date that may still have the pwg.
That will tell you which dp to buy.
Most decent dealers will have the model year built into their website so you don't screw it up. Only issue is if you are buying used.
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