The Plug is designed to block the hole left in the inlet manifold of the N57N Engine when the swirl flaps are removed.

For: 
3' F30 (05/2011 - 07/2015)330d, Sedan, N57N
330dX, Sedan, N57N
335dX, Sedan, N57Z
3' F30 LCI (01/2015 - 10/2018)

330d, Sedan, N57N
330dX, Sedan, N57N
335dX, Sedan, N57Z
3' F31 (07/2011 - 06/2015)

330d, Touring, N57N
330dX, Touring, N57N
335dX, Touring, N57Z
3' F31 LCI (10/2014 - 02/2019)

330d, Touring, N57N
330dX, Touring, N57N
335dX, Touring, N57Z
3' F34 GT (07/2013 - 06/2016)

330d, Gran Turismo, N57N
330dX, Gran Turismo, N57N
335dX, Gran Turismo, N57Z
3' F34 GT LCI (11/2015 - 02/2019)

330d, Gran Turismo, N57N
330dX, Gran Turismo, N57N
335dX, Gran Turismo, N57Z
4' F32 (12/2012 - 02/2017)

430d, Coupe, N57N
430dX, Coupe, N57N
435dX, Coupe, N57Z
4' F32 LCI (06/2016 - 02/2019)

430d, Coupe, N57N
430dX, Coupe, N57N
435dX, Coupe, N57Z
4' F33 (11/2013 - 02/2017)

430d, Convertible, N57N
435dX, Convertible, N57Z
4' F33 LCI (05/2016 - 02/2019)

430d, Convertible, N57N
435dX, Convertible, N57Z
4' F36 Gran Coupé (11/2013 - 02/2017)

430d, Gran Coupé, N57N
430dX, Gran Coupé, N57N
435dX, Gran Coupé, N57Z
4' F36 Gran Coupé LCI (06/2016 - 02/2019)

430d, Gran Coupé, N57N
430dX, Gran Coupé, N57N
435dX, Gran Coupé, N57Z
5' F07 GT (04/2011 - 06/2013)

530d, Gran Turismo, N57N, AUTO
535d, Gran Turismo, N57Z, AUTO
535d, Gran Turismo, N57Z, AUTO
535dX, Gran Turismo, N57Z
5' F07 GT LCI (08/2012 - 02/2017)

530d, Gran Turismo, N57N, AUTO
530dX, Gran Turismo, N57N, AUTO
535d, Gran Turismo, N57Z, AUTO
535dX, Gran Turismo, N57Z, AUTO
5' F10 (06/2010 - 06/2013)

530d, Sedan, N57N
530dX, Sedan, N57N
535d, Sedan, N57Z
535dX, Sedan, N57Z
5' F10 LCI (08/2012 - 10/2016)

530d, Sedan, N57N
530dX, Sedan, N57N
535d, Sedan, N57Z
535d, Sedan, N57N, USA
535dX, Sedan, N57Z
535dX, Sedan, N57N
5' F11 (06/2010 - 06/2013)

530d, Touring, N57N,
530dX, Touring, N57N
535d, Touring, N57Z
535dX, Touring, N57Z
5' F11 LCI (08/2012 - 02/2017)

530d, Touring, N57N
530dX, Touring, N57N
535d, Touring, N57Z
535dX, Touring, N57Z

This plug and gaskets doesn't fit M57, N57 and B57 engines.