This high-intensity discharge lighting ballast is designed to match the fit and performance of the original HID ballast and restore proper headlight function on specified vehicles. This part is compatible with the following vehicles. Before purchasing, enter your vehicle trim in the garage tool to confirm fitment. [BMW 525i: 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010] - [BMW 525xi: 2006, 2007] - [BMW 528i: 1996, 1997, 1998, 1999, 2000] - [BMW 530i: 2001, 2002, 2003] - [BMW 540i: 1997, 1998, 1999, 2000, 2001, 2002, 2003] - [BMW M5: 2000, 2001, 2002, 2003]