Mercedes-AMG M156 Thermostat Replacement DIY (C63 AMG, E63 AMG, SLS AMG, S63 AMG, CL63 AMG & More)

►Thermostats are a simple device that regulates coolant flow through the engine. When cold, it will stay closed, stopping coolant flow to help the engine come up to temperature faster. Once up to temperature, it will open and allow coolant to flow normally and maintain proper engine temperature. Always install with the 'jiggle pin' bleed valve at 12 o'clock when possible.

For many applications, multiple temperature ratings are available. These ratings denote when the thermostat opens, and in extreme climates, different temperature ratings can be used to assist the vehicle in maintaining proper temperatures. In very hot desert climates, for instance, a lower temperature rated thermostat may be preferred.

There are two types of thermostat failures:

Thermostat stuck open (most common): Coolant will flow through the engine constantly from cold, preventing the engine from reaching operating temperature. Usually, this means a rich mixture resulting in poor fuel mileage and potential catalytic converter damage.

Thermostat stuck closed: If the thermostat is stuck closed, it will restrict flow into the engine resulting in an overheating condition, resulting in potential catastrophic engine damage.

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This Kit Services The Following Vehicles:
Mercedes-Benz CLK63 AMG
2007 Mercedes-Benz CLK63 AMG
2008 Mercedes-Benz CLK63 AMG
2009 Mercedes-Benz CLK63 AMG

Mercedes-Benz CLS63 AMG
2007 Mercedes-Benz CLS63 AMG
2008 Mercedes-Benz CLS63 AMG
2009 Mercedes-Benz CLS63 AMG
2010 Mercedes-Benz CLS63 AMG
2011 Mercedes-Benz CLS63 AMG

Mercedes-Benz E63 AMG
2007 Mercedes-Benz E63 AMG
2008 Mercedes-Benz E63 AMG
2009 Mercedes-Benz E63 AMG
2010 Mercedes-Benz E63 AMG
2011 Mercedes-Benz E63 AMG

Mercedes-Benz ML63 AMG
2007 Mercedes-Benz ML63 AMG
2008 Mercedes-Benz ML63 AMG
2009 Mercedes-Benz ML63 AMG
2010 Mercedes-Benz ML63 AMG
2011 Mercedes-Benz ML63 AMG

Mercedes-Benz R63 AMG
2007 Mercedes-Benz R63 AMG

Mercedes-Benz CL63 AMG
2008 Mercedes-Benz CL63 AMG
2009 Mercedes-Benz CL63 AMG
2010 Mercedes-Benz CL63 AMG

Mercedes-Benz S63 AMG
2008 Mercedes-Benz S63 AMG
2009 Mercedes-Benz S63 AMG
2010 Mercedes-Benz S63 AMG

Mercedes-Benz C63 AMG
2008 Mercedes-Benz C63 AMG
2009 Mercedes-Benz C63 AMG
2010 Mercedes-Benz C63 AMG
2011 Mercedes-Benz C63 AMG
2012 Mercedes-Benz C63 AMG
2013 Mercedes-Benz C63 AMG
2014 Mercedes-Benz C63 AMG
2015 Mercedes-Benz C63 AMG

Mercedes-Benz SL63 AMG
2009 Mercedes-Benz SL63 AMG
2011 Mercedes-Benz SL63 AMG
2012 Mercedes-Benz SL63 AMG

Mercedes-Benz SLS AMG
2011 Mercedes-Benz SLS AMG
2012 Mercedes-Benz SLS AMG
2013 Mercedes-Benz SLS AMG
2014 Mercedes-Benz SLS AMG
2015 Mercedes-Benz SLS AMG

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