Compatibility: 2009-2011 BMW Z4 2007-2013 BMW 328i 2009-2013 BMW 328i xDrive 2008-2013 BMW 128i 2007-2008 BMW 328xi 2006-2010 BMW 130i 2006 BMW 325xi 2006 2009 BMW 325i 2006 BMW 330xi 2006-2007 BMW 330i 2006-2011 BMW 323i 2006 BMW 330Ci 2006 BMW 325Ci Features: -OE design to ensure exact fit, form and function for an easy drop-in installation; -Built with high density multi-lowered fins for maximum cooling efficiency; -ISO 9001 certified manufacturing plants; -Direct Replacement; -Improve Cooling Efficiency; -100% Leak Tested; -Plastic tanks with aluminum core; -Built to strict quality control standards; .