Audi RS3 8V RSQ3 F3 Water Coolant Pump Regulator Flange 2.5 TFSI 07K121133E

Audi RS3 8V RSQ3 F3 Water Coolant Pump Regulator Flange 2.5 TFSI is an original cooling system component from the Cooling system hoses and pipes category, designed for 2.5 TFSI engines in Audi sports models. Engineered as a factory part, it ensures precise coolant flow and a stable connection with other system components.

Specifications and technical data

• SKU: 07K121133E
• Mark: Audi
• Condition: Used
• OEM Part Number: 07K121133E
• Substitutable numbers: 07K121133E, 07K 121 133 E
• Category: Coolant Hoses

Purpose and function in the cooling system

The coolant regulator flange is responsible for a tight and stable connection of hoses within the 2.5 TFSI engine cooling circuit. Proper routing and management of the coolant medium are crucial for maintaining the optimal temperature of the power unit, especially in high-performance versions such as the RS3 8V or RSQ3 F3, where thermal loads are significantly higher than in standard variants.

Thanks to its design, which adheres to Audi factory standards, this component works seamlessly with other cooling system parts without the need for modifications, facilitating maintenance and reducing the risk of leaks resulting from poor fitment.

Construction and fitment for the 2.5 TFSI engine

The flange has been specifically designed for the geometry of the 2.5 TFSI unit, taking into account hose routing, mounting points, and the available workspace in the engine bay. Properly shaped ports allow for the correct connection of cooling hoses, minimizing stress and the risk of cracks at the joints.

Its original Audi origin ensures that factory dimensional tolerances are maintained, which translates into:

• secure seating in the housing and stable mounting,
• proper sealing of hose connections,
• compatibility with the stock cooling system architecture.

Characteristics of the used component

The offered flange comes from the used Audi parts segment, which allows for cost-effective repairs while maintaining the manufacturer's original specifications. In practice, this means the ability to replace a worn or damaged flange with a component of the same geometry and manufacturing standard, without the need to resort to aftermarket replacements with uncertain fitment.

Choosing a used OEM component is particularly beneficial for high-output engines, where the stability of the cooling system has a direct impact on engine durability and consistent performance.

Benefits of using the original regulator flange

Using this component in an Audi RS3 8V or RSQ3 F3 helps restore proper coolant circulation and reduces the risk of overheating the 2.5 TFSI unit. The most important advantages include:

• Factory fitment – compatibility with the engine and cooling system design, with no modifications required.
• Stable hose connections – proper routing and support of hoses reduce mechanical stress on the joints.
• Consistency with the rest of the system – maintaining the original coolant flow architecture, which is essential for dynamic driving.

This solution is particularly recommended when replacing parts after a coolant leak, following collision repairs, or during comprehensive cooling system maintenance in vehicles driven in a more dynamic manner.

Technical support and additional materials

To better plan the cooling system service for your Audi, it is worth checking out practical tips regarding the operation of the entire circuit at high temperatures. A detailed discussion on the impact of heat on cooling efficiency and the possibilities of using pre-owned components can be found in the guide Summer heat vs. cooling system: used radiators and fans as a guarantee of savings.

If you are planning a comprehensive repair or upgrade of the cooling system area in your Audi and need other elements from the same group, such as pipes, hoses, or additional connectors, check out the available parts in the Audi cooling system hoses and pipes category.