Information?? High quality chassis partseries products. Made with high strength steel tubing for superior strength and durability. Stable performance, reliable quality and long service life Uniform thickness, no blow holes, slag, cracks, tearing, or incomplete fusion. Measured by specialized inspection tools after welding to make sure assemble hole , bushings insert, and installation sizes are proper. Professional InstallerisHighly Recommended(No Instruction Included) Alignment Highly Recommended After InstallCompatibility Chart?? For BMW X3 F25 X5 E70 X6 E71 E72 For 2009-2013 BMW X5 xDrive35i (E70) For 2009-2014 BMW X6 xDrive35i (E71??Package Content?? 1 x Transfer Case Assembly ATC450??W/o Product Instruction