High quality replacement. diaphragm for crankcase ventilation.Easy to install. replacement is very easy, you need to remove the valve cover by prying it with a screwdriver.remove the old and install the new membrane.Manufacturer Part Number: 11127645173Fits for 1series F20 LCI (09/2015 - 06/2019) - M140i, M140iXfor 1series F21 LCI (09/2015 - 06/2019) - M140i, M140iXfor 2 series F22 (09/2015 - 06/2017) - M240i, M240iXfor 2 series F22 LCI (09/2016 - 12/2019) - M240i, M240iXfor 2 series F23 (09/2015 - 06/2017) - M240i, M240iXfor 2 series F23 LCI (10/2016 - 12/2019) - M240i, M240iXfor 3 series F30 LCI (10/2014 - 10/2018) - 340i, 340iXfor 3 series F31 LCI (10/2014 - 06/2019) - 340i, 340iXfor 3 series F34 GT LCI (09/2015 - 12/2019) - 340i, 340iXfor 4 series F32 (04/2015 - 02/2017) - 440i, 440iXfor 4 series F32 LCI (05/2016 - 12/2019) - 440i, 440iXfor 4 series F33 (03/2015 - 02/2017) - 440i, 440iXfor 4 series F33 LCI (05/2016 - 12/2019) - 440i, 440iXfor 4 series F36 Gran Coupé (03/2015 - 02/2017) - 440i, 440iXfor 4 series F36 Gran Coupé LCI (05/2016 - 12/2019) - 440i, 440iXfor 5 series G30 (10/2015 - 06/2019) - 540i, 540iXfor 5 series G31 (03/2016 - 06/2019) - 540iXfor 6 series G32 GT (09/2016 - 06/2019) - 640i, 640iXfor 7 series G11 (10/2014 - 01/2019) - 740ifor 7 series G12 (10/2014 - 02/2019) - 740i, 740iX, 740Li, 740LiXfor X3 G01 (10/2016 - 07/2019) - M40iXfor X4 G02 (03/2017 - 07/2019) - M40iXColour:blackMaterial:plasticPackage Contents:1 * Valve Cover GasketOnly the above package content, other products are not included.Note: Light shooting 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.