Audi A4 B8 Water Pump 2.0 TFSI Petrol Engine Coolant Unit 06H121026BA

Description

Audi A4 B8 Water Pump 2.0 TFSI Petrol Engine Coolant Unit is an original cooling system component designed for petrol engines, ensuring stable heat dissipation from the engine. Thanks to its factory design, the pump works with other system components in a predictable and safe manner, which translates into efficient operation of the power unit. This is a solution for users who are looking for parts with preserved geometry and parameters consistent with factory specifications.

Specifications and technical data

• SKU: 06H121026BA
• Mark: Audi
• Condition: Used
• OEM Part Number: 06H121026BA
• Substitutable numbers: 06H121026BA, 06H 121 026 BA
• Fuel type: Petrol
• Category: Water Pumps

Purpose and role in the cooling system

The presented water pump belongs to the Water pumps category and is the component responsible for the forced circulation of coolant in the petrol engine. Maintaining proper circulation of the cooling medium is crucial for maintaining a stable operating temperature, protecting the cylinder head, block, and accessories from overheating, as well as reducing the risk of local thermal stresses.

In TFSI family units, a properly functioning water pump contributes to:

• maintaining the optimal engine operating temperature across the full load range,
• stability of combustion parameters and control system operation,
• reducing the risk of damage to gaskets, hoses, and aluminum components exposed to high temperatures.

Construction and compatibility with the 2.0 TFSI unit

The pump was designed by Audi as a component compatible with the 2.0 TFSI petrol-powered engine. This means appropriately selected hydraulic efficiency, flow characteristics, and connection port geometry, which facilitates installation in factory mounting points. The construction is prepared for operation in typical operating conditions for this type of unit, taking into account changes in temperature, pressure, and dynamic loads.

Thanks to the preservation of the original installation specification, the pump works with the stock engine accessories, which limits the need for additional modifications and allows for the maintenance of the factory cooling system configuration.

Condition, origin, and benefits of choosing a used part

The offered water pump is a used component, which allows for a significant reduction in repair costs compared to purchasing a new OEM subassembly, while maintaining the original design. For many users, this is a reasonable compromise between price and quality, especially in the case of vehicles used on a daily basis, where functionality and compliance with factory solutions are what count.

Choosing an original, used water pump has several practical advantages:

• preservation of factory fitment to the engine and accessories,
• reduction of the risk of installation problems typical for aftermarket parts with different geometry,
• possibility of economical repair while maintaining the original cooling system specification.

Selection by part numbers and compatibility with the petrol system

The pump is intended for petrol-powered engines, which is important when selecting parts in the context of the power unit’s thermal characteristics. In practice, this means matching the typical operating temperatures, engine loading methods, and cooling system configuration used in TFSI units. When selecting, it is worth using part numbers and the vehicle’s technical documentation to ensure full compatibility with a specific engine version.

If you want to deepen your knowledge on selecting consumables by catalog numbers and VIN, as well as methods for diagnosing fuel systems, an article describing the principles of operation and maintenance of the fuel system may be helpful – you can find it here: Fuel system – injectors, pumps, and tank: maintenance and regeneration.

Support for Audi cooling 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 pumps, housings, or modules working with the cooling circuit, check the available parts in the Audi water pumps category.