Wagner Tuning Audi RS6/RS7 C7 4.0 BiTurbo Radiator Kit

Wagner Tuning Audi RS6/RS7 C7 4.0 BiTurbo Competition Radiator Kit

The Audi RS6 and RS7 C7 produce serious power straight from the factory thanks to their 4.0-litre V8 twin-turbo engine. With that power comes heat, and keeping that heat under control is essential for consistent performance, particularly during harder driving or once the car has been tuned.

This Wagner Tuning competition radiator kit is designed specifically for the RS6 and RS7 C7’s indirect charge air cooling system. Instead of cooling the compressed air from the turbos with outside air directly, these engines use a separate water-based circuit. Cooler water in that circuit means cooler air entering the engine, which translates to more stable power delivery and better protection under load.

What Makes This Kit Different

Wagner Tuning have developed a new competition racing core that increases radiator volume by 102% over the standard unit. That is more than double the capacity, giving the system far greater ability to absorb and dissipate heat before charge air temperatures begin to rise.

The design also balances the ratio between internal and external cooling surfaces. This matters because it maximises heat transfer while still allowing sufficient airflow to reach adjacent components, including the main engine water cooler. The result is improved charge air cooling without starving the rest of the cooling system of airflow.

Each water cooler also features a thermally conductive anti-corrosion coating, which helps maintain cooling efficiency over time and protects the unit from deterioration.

Key Benefits

• 102% larger core volume compared to the OEM radiator
• Optimised internal and external surface ratio for efficient heat transfer
• Thermally conductive anti-corrosion coating for long-term durability
• Plug-and-play fitment with no modifications required
• Helps maintain consistent performance during spirited driving or with tuned engines

Installation

The kit is a direct replacement for the original coolers and is supplied with full installation instructions. Fitment is straightforward, although care should always be taken when draining and refilling coolant circuits to avoid air locks or contamination.

Vehicle Fitment

This kit fits the following Audi RS6 and RS7 C7 models with the 4.0 TFSI BiTurbo engine:

• Audi RS6 C7 – 412 kW / 560 PS (2013-2018)
• Audi RS6 C7 Performance – 445 kW / 605 PS (2015-2018)
• Audi RS7 C7 – 412 kW / 560 PS (2013-2017)
• Audi RS7 C7 Performance – 445 kW / 605 PS (2015-2017)

Please use the vehicle lookup tool on our website or check the Vehicle Fitment tab to confirm compatibility with your specific car before ordering.

Whether your RS6 or RS7 is running a higher state of tune or you simply want to strengthen the factory cooling setup, this Wagner Tuning kit is a well-engineered, direct-fit upgrade that delivers a meaningful improvement where it matters most.

Part Number: 400001023