The Plug is designed to block the hole left in the inlet manifold of the N57 Engine when the swirl flaps are removed.
Suits:
E90 Facelift
325d N57
330d N57
330xd N57
E91 Facelift
325d N57
330d N57
330xd N57
E92
330d N57
330xd N57
E92 Facelift
325d N57
330d N57
330xd N57
E93
330d N57
E93 Facelift
325d N57
330d N57
F07 GT
530d N57
530d 155kW N57
530dX N57
535d N57S
535dX N57S
F10
525d N57
530d N57
535d N57S
F11
525d N57
530d N57
535d N57S
F01
730d N57
740d N57S
740dX N57S
F02
730Ld N57
E70 Facelift
X5 30dX N57
X5 40dX N57S
E71
X6 30dX N57
X6 40dX N57S
This plug doesn't fit M57 and B57 engines.