Description The Mishimoto racing thermostat for the 08-12 Mercedes Benz C63 AMG will promote greater cooling efficiency in your stock or modified M156 engine. Once the engine is fully warmed up, Mishimoto’s C63 AMG racing thermostat will open at a lower temperature than standard thermostats. This allows coolant to flow through the engine sooner, which reduces and maintains cooler engine temperatures. The Mishimoto 08-12 C63 AMG racing thermostat is the perfect addition to your street or track AMG and is a direct replacement for the stock thermostat. This thermostat includes the signature Mishimoto Lifetime Warranty. 2008-2012 Mercedes-Benz C63 AMG Base 6.3 Liter 722.9, 2012 Mercedes-Benz C63 AMG Black Series 6.3 Liter 722.9, 2008-2010 Mercedes-Benz CL63 AMG Base 6.3 Liter 722.9, 2007-2008 Mercedes-Benz CLK63 AMG Base 6.3 Liter 722.9, 2008 Mercedes-Benz CLK63 AMG Black Series 6.3 Liter 722.9, 2007-2011 Mercedes-Benz CLS63 AMG Base, 2007-2011 Mercedes-Benz ML63 AMG Base 6.3 Liter 722.9, 2007 Mercedes-Benz R63 AMG Base 6.3 Liter 722.9, 2011 Mercedes-Benz S63 AMG Base 5.5 Liter 722.9, 2008-2010 Mercedes-Benz S63 AMG Base 6.3 Liter 722.9, 2009 Mercedes-Benz SL63 AMG Base 6.3 Liter 722.9, 2011 Mercedes-Benz SL63 AMG Base 6.3 Liter 722.9, 2011-2012 Mercedes-Benz SLS AMG Base 6.3 Liter