Brand new and never used, directly replaces the old one and easy installation.
Fitment: for Mercedes-Benz CLA250 2014-2016, for Mercedes-Benz B250 2013-2016, for Mercedes-Benz GLA250 2015-2016, for Mercedes-Benz GLA45 AMG 2015-2016, for Mercedes-Benz CLA45 AMG 2014-2016
OE Number: 2702000315, A2702000315
Good Replacement: The engine's thermostat regulates the temperature of the engine by controlling coolant flow. A bad or failing thermostat: high temperature reading and engine overheating, low temperature reading and underheated engine, temperature changing erratically, coolant leaks around thermostat housing or under the vehicle. How to fine thermostat: You can find your car's thermostat by starting at the upper radiator hose and following it to where it enters the top of the engine.