BlackBoost Coolant Wide Open Thermostat for Mercedes-Benz GL550(X166) M278 4.7L V8 BiTurbo (2013 – 2015) R6 Large rear stretch panel insert

Large rear stretch panel insert provides increased comfort and flexibility to the waist and lower back

plentiful internal and external pocket choices

CNC 6061-T6 alloy buckles

over-injected ergonomic knuckle for effective impact protection

1 x Arai helmet

BlackBoost Coolant Wide Open Thermostat for Mercedes-Benz GL550(X166) M278 4.7L V8 BiTurbo (2013 – 2015) R6 Large rear stretch panel insertBlackBoost Coolant Wide Open Thermostat for Mercedes Benz GL550(X166) M278 4. 7L V8 BiTurbo (2013 2015) 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