MAHLE TI 306 85 Engine Coolant Thermostat Integral OE 85°C Opening Temperature

The MAHLE TI 306 85 is an OE-grade integral engine coolant thermostat engineered to deliver precise temperature regulation for select Audi, Volkswagen, and Porsche vehicles. As the world's largest OEM thermostat supplier, MAHLE designs every Original thermostat to strict vehicle manufacturer specifications, ensuring a direct-fit replacement with no compromise in performance or reliability.

This integral thermostat consolidates the thermostat element, housing, and gasket or seal into a single, convenient assembly that mounts directly to the engine block. With an 85°C (185°F) start-to-open temperature, the TI 306 85 keeps the engine operating within its optimal thermal range — improving combustion efficiency, reducing emissions, fuel consumption, and minimizing wear on critical engine components.

Key Features:

• OE-equivalent design — manufactured to vehicle manufacturer specifications for a precise, confident fit
• Integral thermostat construction — thermostat insert, housing, and seal combined into one assembly for simplified installation
• 85°C (185°F) opening temperature — maintains optimal engine operating temperature
• Includes gasket/seal — everything needed for a complete installation is included
• All-new construction — contains no remanufactured components
• Trusted by OEMs and professional technicians worldwide

Replacing a faulty thermostat promptly is critical — a thermostat stuck open causes excessive engine cooling and reduced efficiency, while one stuck closed can lead to rapid overheating and serious engine damage. The MAHLE TI 306 85 is a reliable, factory-quality solution that restores proper cooling system function.