03l121111ad - Thermostat & Wholesale price

The part number "03L121111AD" refers to a thermostat, commonly used in several Volkswagen Group vehicles, such as Audi, Volkswagen, and Skoda. This thermostat is essential for regulating the engine's operating temperature by controlling the flow of coolant to maintain optimal engine temperature.

Here’s a more detailed overview of the thermostat:

1. Function: The thermostat opens and closes based on the engine temperature. When the engine is cold, the thermostat remains closed, preventing coolant from circulating and allowing the engine to warm up quickly. As the engine reaches its optimal temperature, the thermostat opens to allow coolant to flow through the engine and maintain a stable temperature.

2. Location: It is usually located near the engine block and is connected to the cooling system. In most cases, it is positioned in a housing that is bolted to the engine, making it accessible for replacement.

3. Material: Thermostats are typically made of durable materials like metal or high-quality plastic to withstand high temperatures. Some thermostats may have a wax element inside that expands when heated, which is responsible for opening the valve.

4. Common Issues: A malfunctioning thermostat can cause overheating or underheating of the engine. If the thermostat gets stuck in the closed position, it can cause the engine to overheat. If it sticks open, the engine may run too cold, reducing fuel efficiency and causing increased emissions.

5. Compatibility: The part number "03L121111AD" is specific to certain vehicle models, often found in 2.0 TDI engines. Always verify the exact model and year of your vehicle before replacing the thermostat to ensure compatibility.

6. Replacement: Replacing a thermostat is generally a straightforward job but requires draining some coolant and disassembling parts of the engine cover to access it. It's recommended to check the condition of the coolant and replace it if necessary when performing the thermostat replacement.

If you're planning to replace or maintain the thermostat, make sure to consult the vehicle's manual or seek professional assistance to ensure proper installation.

Detailed link: 03l121111ad