Wagner Tuning Competition auxiliary water cooler for Audi S6/S7 C7 (4.0 TFSI) – 92% more cooling volume Maximize the performance and thermal stability of your Audi S6/S7 C7! With the Wagner Tuning Competition auxiliary water cooler kit, you can optimize the indirect intercooler circuit of your 4.0L V8 biturbo engine. An impressive 92% increase in volume drastically lowers the coolant temperature and leads to a noticeable direct increase in performance. Why this auxiliary cooler is a must-have for your Audi S6/S7 C7: Massive cooling volume expansion: The newly developed Competition racing mesh increases the cooling volume of the standard water cooler by an astonishing 92%. Direct performance increase: By reducing the coolant temperature in the indirect intercooler circuit, the charge air is cooled more effectively, resulting in improved performance and consistent power output. Maximum heat transfer: The optimized ratio between the inner and outer cooling surfaces enables maximum heat transfer while ensuring sufficient airflow for all adjacent components. Durable and protected: Equipped with a heat-conducting anti-corrosion coating for a lasting and stable cooling effect. Easy installation: Thanks to detailed installation instructions, assembly is simple and straightforward (plug & play). Technical detail: Optimization of the 4.0 V8 TFSI cooling circuit The 4.0L V8 biturbo engine in the Audi S6 and S7 models is designed for performance and uses an innovative indirect intercooler circuit in which the charge air is cooled via a separate cooling water circuit. However, the standard system quickly reaches its thermal limits under high loads (e.g., tuning or sporty driving). The Wagner Tuning auxiliary water cooler kit eliminates these bottlenecks and, thanks to its 92% volume expansion, ensures a stable and low coolant temperature that unleashes the full performance of your engine. Technical details & vehicle compatibility (Audi S6/S7 C7) The Wagner Tuning Competition Water Cooler Kit is plug-and-play compatible with the following models: Wagner Tuning Additional Water Cooler: Volume increase: +92% compared to the standard water cooler core type: Competition racing mesh Coating: Heat-conducting anti-corrosion coating Plug and Play suitable for the following models: Audi S6 C7 309-331KW/420-450PS 2012-2018 Audi S7 C7 309-331KW/420-450PS 2012-2018 Part number: 400001027 Kit comes with: 1x auxiliary water cooler (Competition) 1x set of silicone hoses 1x mounting material Order now and experience the ultimate driving experience!