2010-2011 C250 2.5L. 2012-2015 C250 1.8L. 2008-2012 C300 3.0L. 2010-2011, 2013-2014 C300 3.5L. 2008-2015 C350 3.5L. Securely fit the expansion tank into place, ensuring all connections are tight. Designed specifically for optimal performance in various vehicle applications.