2011-2012 C180 1.8L. 2013-2015 C180 1.6L. 2010-2011 C250 2.5L. 2012-2015 C250 1.8L. Securely fit the expansion tank into place, ensuring all connections are tight. 2012 CLS350 4.7L. Designed specifically for optimal performance in various vehicle applications.