The Plug is designed to block the hole left in the inlet manifold of the N57 Engine when the swirl flaps are removed. With these plug seal the opening in the intake bridge, which is created after removing the swirl flap shaft. The supplied spacer helps to the correct pressure, if the base is worn. Once installed the swirl flap motor housing is refitted it holds the bung in place. FIT FOR: For E90 Facelift: 325d N57 / 330d N57 / 330xd N57 For E91 Facelift: 325d N57 / 330d N57 / 330xd N57 For E92 Facelift: 325d N57 / 330d N57 / 330xd N57 For E93 Facelift: 325d N57 /330d N57 For F07 GT Facelift:: 530d N57/ 530d 155kW N57/ 530dX N57 / 535d N57S / 535dX N57S For F10 Facelift: 525d N57 / 530d N57 / 535d N57S For F11 Facelift: 525d N57/ 530d N57 / 535d N57S For F01 Facelift: 730d N57 / 740d N57/ 740dX N57S For F02 Facelift: 730Ld N57 For E70 Facelift: X5 30dX N57 / X5 40dX N57S For E71 Facelift: X6 30dX N57 / X6 40dX N57S Doesn't fit M57 and B57 engines. Colour:Silver+Red Material:plastic+Metal Package Contents: 1x Flaps Plug Delete Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.