BlackBoost Coolant Wide Open Thermostat for Mercedes-Benz ML63 AMG (W166) M157 5.5L V8 BiTurbo (2012 – 2019) Tiger 900 The essence of a high

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BlackBoost Coolant Wide Open Thermostat for Mercedes-Benz ML63 AMG (W166) M157 5.5L V8 BiTurbo (2012 – 2019) Tiger 900 The essence of a highBlackBoost Coolant Wide Open Thermostat for Mercedes Benz ML63 AMG (W166) M157 5. 5L V8 BiTurbo (2012 2019) Racing Coolant Thermostat. With BlackBoost Racing Coolant Thermostat the coolant circulation with the radiator is always at 100% open. The factory coolant thermostat opens at 100C 212F. Only for racing application, not recommended be used under very cold weather conditions. Note : Prior to check out, please click here to confirm product