Fit for: for BMW 525i 2004-2007, for BMW 525xi 530xi 2006-2007, for BMW 528i 2008-2011, for BMW 528i xDrive 2009-2010, for BMW 528xi 535xi 2008, for BMW 530i 2004-2007, 2018-2020, for BMW 535i 2008-2016, for BMW 535i GT 2010-2017, for BMW 535i GT xDrive 2011-2017, for BMW 535i xDrive 2009-2016, for BMW 540i 2018-2020, for BMW 545i 2004-2005, for BMW 550i 2006-2016, for BMW 550i GT 2010-2015, for BMW 550i GT xDrive 2010-2016, for BMW 550i xDrive 2011-2016, for BMW 640i 2012-2017
OE Number 17117639021, 17137516004
Good Replacement: to replace your radiator tank cap if it's broken, cracked, clogged beyond repair, or won't stay aimed correctly.
Easy installation: Remove the old washer reservoir cap, then install the new cap on the washer reservoir. Make sure that it will be fitted and sealed on the washer reservoir to avoid any leaks