BMW OEM Mass Air Flow Sensor used in good working condition for those bmw with the N55 3.0L listed below

BMW 135i  2011-2013

BMW 335i 2011-2012

BMW 535i 2011-2016

BMW 640i 2011-2016

BMW 740Ii 2011-2015

BMW X3 35i 2011-2016

BMW X5 35i 2011-2016

BMW X6 35i 2011-2016

Only fits on these BMW models with the N55 3.0L Twin Turbo engine