1、The plug is designed to block the hole left in the inlet manifold of the N47 Engine when the swirl flaps are removed. 2、Made of premium aluminum & plastic material for maximum durability. 3、Once installed the swirl flap motor housing is refited it holds the bung in place. 4、High temperature resistance, good corrosion resistance, long-lasting service life. 5、Easy to install, perfect match to your original engine. Features: The plug is designed to block the hole left in the inlet manifold of the N47 Engine when the swirl flaps are removed. Made of premium aluminum & plastic material for maximum durability. Once installed the swirl flap motor housing is refited it holds the bung in place. High temperature resistance, good corrosion resistance, long-lasting service life. Easy to install, perfect match to your original engine. Specification: Material: Aluminum Alloy + Plastic Color: Silver + Red Fitment: Fit for E81 - 120d / 123d, (02/2006 - 12/2011) Fit for E87 - 118d / 120d / 123d, (01/2006 - 06/2011) Fit for E88 - 120d / 123d, (09/2007 - 10/2013) Fit for E82 - 120d / 123d, (11/2006 - 10/2013) Fit for E90 - 320d, (03/2007 - 09/2008) Fit for E90 LCI - 320d / 320xd, (07/2007 - 03/2010) Fit for E91 - 320d, (02/2007 - 08/2008) Fit for E91 LCI - 320d / 320xd, (07/2007 - 02/2010) Fit for E92 - 320d / 320xd, (06/2005 - 02/2010) Fit for E93 - 320d, (09/2007 - 02/2010) Fit for E60 LCI - 520d, (04/2006 - 12/2009) Fit for E61 - 520d, (04/2006 - 05/2010) Fit for X1 E84 - 20d / 20dx /23dx, (09/2008 - 06/2012) Fit for X3 E83 LCI - 1.8d / 2.0d, (11/2006 - 08/2010) This plug doesn't fit N47N engines. Package list: 1 * Swirl Flap Plug 4 * Gaskets