BlackBoost Coolant Wide Open Thermostat for Mercedes-Benz R63 AMG (W251) M156 6.2L V8 (2007)
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 100°C / 212°F.
Only for racing application, not recommended be used under very cold weather conditions.
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