Audi VW Thermostat Housing - Vaico 078121121K

Product Information

The engine coolant thermostat housing is the component that houses the thermostat, which regulates the flow of coolant to and from the engine. The thermostat housing connects the engine to the radiator via hoses and helps control the engine’s operating temperature by opening and closing based on coolant temperature. In some vehicles, the thermostat housing also has additional connections for sensors or other cooling system components.

• Coolant Leaks: A common sign of a failing thermostat housing is a coolant leak. This can happen if the housing becomes cracked, or corroded, or if the gasket that seals the housing fails.
• Engine Overheating: If the thermostat housing is damaged or the thermostat inside it is stuck in the closed position, it can prevent coolant from circulating properly through the engine.
• Erratic Temperature Readings: A malfunctioning thermostat or housing can cause the engine’s temperature to fluctuate. You may notice that the temperature gauge on the dashboard moves unpredictably, indicating that the coolant flow is not being properly regulated.

About Vaico

VAICO premium brand is well known for smart repair solutions for engine and transmission parts on the global independent aftermarket. With over 28,000 high-quality spare parts and 2,700,000 vehicle connections, we guarantee a high level of vehicle coverage: our extensive range of transmission components and spare parts for air control systems and engine control covers a wide range of models. Our professional vehicle repair range also includes further products from the cooling, steering, brakes, body and filter categories, as well as certified “Made in Germany” fluids.

VAICO specializes in providing innovative repair solutions put together by our experts for every workshop: VAICO Expert Kits+ make it easier to identify and procure parts and also reduce the storage capacity needed. The service-orientated Expert Kits+ are easy to install and meet the highest standard of installation safety – and save time and money.