Audi A3 S3 8V Water Pump Thermostat Coolant Regulator 2.0 TFSI 06L121111M

Visual condition of the part

The product shows signs of use visible in the photos.

Audi A3 S3 8V Water Pump Thermostat Coolant Regulator is a component from the Thermostats and housings group, designed for the cooling system of gasoline engines. It is responsible for maintaining a stable operating temperature of the power unit, which translates into safe operation, correct performance characteristics, and a reduced risk of overheating. Thanks to a design compliant with the manufacturer's standards, this is a solution technically matched to the specifics of Audi models from the A3/S3 8V 2.0 TFSI family.

Specifications and technical data

• SKU: 06L121111M-1
• Mark: Audi
• Condition: Used
• OEM Part Number: 06L121111M
• Substitutable numbers: 06L121111M, 06L 121 111 M
• Fuel type: Petrol
• Category: Thermostats & Housings

Purpose and role in the cooling system

The presented water pump with thermostat housing operates in the gasoline engine cooling system, ensuring forced coolant circulation and controlling its flow depending on the temperature. Integrating the pump with the thermostat housing allows for precise management of fluid circulation between the engine block and the radiator, which is important both during engine warm-up and during intensive operation.

A properly selected element of this type helps to:

• maintain a stable engine operating temperature across a wide range of loads,
• reduce local overheating of components,
• preserve the correct operating characteristics of the 2.0 TFSI unit,
• reduce the risk of failures resulting from improper cooling.

Benefits of using the original Audi design

The water pump with thermostat housing in this configuration has been designed for the specific requirements of 2.0 TFSI units in the Audi A3/S3 8V, which translates into geometric fit and compatibility with factory equipment. The original Audi design means maintaining flow parameters and thermostat opening characteristics consistent with the manufacturer's specifications, which is essential for turbocharged engines sensitive to temperature fluctuations.

Key advantages of such a solution include:

• consistency with the factory cooling system – no need for installation modifications,
• maintaining the heating and cooling dynamics intended by the manufacturer,
• reducing the risk of improper operation resulting from the use of components with different flow parameters.

Operational and installation characteristics

The item comes from a group of used parts, which in practice allows for economical repair while maintaining the original design. Used condition means that the component has been previously operated, therefore, standard workshop verification for leaks, play, and the condition of connection ports is recommended before installation. This type of pump with thermostat housing is intended for installation in place of the factory assembly, using standard mounting points and connections.

When planning a replacement, it is worth considering:

• checking the condition of cooling system hoses and clamps,
• replacing the coolant in accordance with the vehicle manufacturer's recommendations,
• bleeding the system after installation to avoid air pockets.

Application in 2.0 TFSI gasoline engines

The presented water pump and thermostat housing assembly is intended for units powered by gasoline, which is significant from the point of view of thermal characteristics and thermal loads. 2.0 TFSI engines operate in a wide range of temperatures and pressures, which is why a properly selected cooling system element affects operational stability, power delivery refinement, and the durability of turbocharging equipment.

Selecting a part consistent with Audi technical documentation allows for maintaining:

• the operating temperature intended by the manufacturer,
• proper cooperation with the engine control system,
• appropriate operating conditions for engine oil and other operating fluids.

Support in selection and system expansion

If you are planning a comprehensive repair or upgrade of the engine area in your Audi and need other elements from the same group, such as additional housings, bodies, or fluid flow control modules, check the available parts in the Audi Thermostats and housings category.

To better understand the relationships between the cooling system and engine power supply and to correctly select components by catalog numbers, it is worth reading practical tips on diagnostics and operation of the fuel system – you will find them in the article Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration, which discusses, among other things, selecting parts by OEM numbers and the principles of their regeneration.