The 2.9L V6 biturbo engine of Audi RS4 / RS5 models is equipped with an indirect charge-air cooling circuit. So the cooling of the charged air is not realized by the ambient air as a cooling medium (as usual) but is made with its own cooling water circuit. A reduction in the temperature of the cooling water is directly equated with an improved cooling performance of the charged air. This is precisely where the advantages of the WAGNERTUNING upgrade water cooler come into play.

The newly developed competition racing core of the WAGNERTUNING high-performance water coolers increases the radiator volume of the OEM water coolers by a total of 55 %. The calculated ratio between the inner and outer cooling surface generates a maximum heat transfer. It allows at the same time enough airflow for the surrounding components (for example, the engine water cooler) for its heat exchange. The water coolers have a heat-conductive anti-corrosion coating to ensure a lasting cooling effect.

The plug & play installation of the system is simple and easy to perform (an installation instruction is included as well).

Specs:

Dimensions OEM radiator:
720 mm x 485 mm x 25 mm
V = 8,73 Liter
A = 3492 cm²

vs.

Dimensions WT radiator:
690 mm x 490 mm x 40 mm
V = 13,52 Liter
A = 3381 cm²