2008 BMW X6 Engine: 3.0L L6; Ribbed V-Belt; Grooved; Position: Left;. 2009 BMW X6 Submodel: xDrive35i; Engine: 3.0L L6; Ribbed V-Belt; Grooved; Position: Left;. 2010 BMW X6 Submodel: xDrive35i; Engine: 3.0L L6; Ribbed V-Belt; Grooved; Position: Left;.