RS Water Thermostat opening earlier than the standart OEM part and gives your engine a quicker cooling. The RS Fan switch with his two steps is like the thermostat quicker turning the fan on and gives your engine the needed cooling specialy when engine is tuned. With new gaskets. Opening Temp. Thermostat 81°C Fan switch step one @ 80°C/step two @ 85°C Cable setup for temp. sensor: Red= positive (30A fuse needed) Grey= fan step 1 Black= fan step 2 Made in Germany quality! Manufacturer Information about the manufacturer BAR-TEK BAR-TEK Motorsport GmbH Im Rauschen Auel 3, 51491 Overath-Brombach, Germany info@bar-tek.com