Mercedes AMG M176/M177/M178 Wide Open Thermostat Bypass

Unlock the full potential of your Mercedes AMG M176/M177/M178 engine with our Wide Open Thermostat Bypass – BlackBoost.

With our 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.