This replacement engine coolant thermostat housing assembly is engineered to match the fit and durability of the stock housing assembly on specified vehicles. It is designed to withstand extreme temperature changes to extend service life. This part is compatible with the following vehicles. Before purchasing, enter your vehicle trim in the garage tool to confirm fitment. [BMW 1 Series M: 2011] - [BMW 125i: 2008, 2009, 2010, 2011, 2012, 2013] - [BMW 128i: 2008, 2009, 2010, 2011, 2012, 2013] - [BMW 130i: 2006, 2007, 2008, 2009, 2010] - [BMW 135i: 2008, 2009, 2010] - [BMW 323i: 2006, 2007, 2008, 2009, 2010, 2011] - [BMW 325Ci: 2007] - [BMW 325i: 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013] - [BMW 325xi: 2006] - [BMW 328i xDrive: 2009, 2010, 2011, 2012, 2013] - [BMW 328i: 2007, 2008, 2009, 2010, 2011, 2012, 2013] - [BMW 328xi: 2007, 2008] - [BMW 330i: 2006, 2007] - [BMW 330xi: 2006] - [BMW 335i xDrive: 2009, 2010] - [BMW 335i: 2007, 2008, 2009, 2010] - [BMW 335is: 2011, 2012, 2013] - [BMW 335xi: 2007, 2008] - [BMW 525i: 2006, 2007, 2008, 2009, 2010] - [BMW 525xi: 2006, 2007] - [BMW 528i xDrive: 2009, 2010] - [BMW 528i: 2008, 2009, 2010] - [BMW 528xi: 2008] - [BMW 530i: 2006, 2007, 2008, 2009, 2010] - [BMW 530xi: 2006, 2007] - [BMW 535i xDrive: 2009, 2010] - [BMW 535i: 2008, 2009, 2010] - [BMW 535xi: 2008] - [BMW X1: 2010, 2011] - [BMW X3: 2007, 2008, 2009, 2010, 2011] - [BMW Z4: 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016].