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: 11127645173 Fits for 1series F20 (09/2015 - 06/2019) - M140i, M140iX for 1series (09/2015 - 06/2019) - M140i, M140iX for 2 series F22 (09/2015 - 06/2017) - M240i, M240iX for 2 series F22 (09/2016 - 12/2019) - M240i, M240iX for 2 series F23 (09/2015 - 06/2017) - M240i, M240iX for 2 series F23 (10/2016 - 12/2019) - M240i, M240iX for 3 series F30 (10/2014 - 10/2018) - 340i, 340iX for 3 series F31 (10/2014 - 06/2019) - 340i, 340iX for 3 series F34 GT (09/2015 - 12/2019) - 340i, 340iX for 4 series F32 (04/2015 - 02/2017) - 440i, 440iX for 4 series F32 (05/2016 - 12/2019) - 440i, 440iX for 4 series F33 (03/2015 - 02/2017) - 440i, 440iX for 4 series F33 (05/2016 - 12/2019) - 440i, 440iX for 4 series F36 Gran Coup (03/2015 - 02/2017) - 440i, 440iX for 4 series F36 Gran Coup (05/2016 - 12/2019) - 440i, 440iX for 5 series G30 (10/2015 - 06/2019) - 540i, 540iX for 5 series G31 (03/2016 - 06/2019) - 540iX for 6 series G32 GT (09/2016 - 06/2019) - 640i, 640iX for 7 series G11 (10/2014 - 01/2019) - 740i for 7 series G12 (10/2014 - 02/2019) - 740i, 740iX, 740Li, 740LiX for X3 G01 (10/2016 - 07/2019) - M40iX for X4 G02 (03/2017 - 07/2019) - M40iX Colour:black Material:plastic Package Contents: 1 * Valve Cover Gasket Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.