This engine crankcase vent valve is designed to match the fit and function of the original valve on specified vehicles, and is engineered for durability and reliable performance. This part is compatible with the following vehicles. Before purchasing, enter your vehicle trim in the garage tool to confirm fitment. [BMW 545i: 2004, 2005] - [BMW 550i: 2006, 2007, 2008, 2009, 2010] - [BMW 645Ci: 2004, 2005] - [BMW 650i: 2006, 2007, 2008, 2009, 2010] - [BMW 745i: 2003, 2004, 2005] - [BMW 750i: 2006, 2007, 2008] - [BMW Alpina B7: 2007, 2008] - [BMW X5: 2004, 2005, 2006, 2007, 2008, 2009, 2010]