Genuine OEM Volkswagen Thermostat Cover, part number 059115185C. This component is designed to enclose and protect the thermostat, contributing to the integrity of the cooling system. It is typically found within the thermostat housing assembly. Constructed from durable material, likely rubber or plastic with a metal flange, it measures approximately 3.5 cm in length. Using a genuine OEM thermostat cover ensures a precise fit, proper sealing against coolant leaks, and resistance to temperature fluctuations for reliable cooling system operation.