The 2.0 Liter B48B20 and 3.0 Liter B58B30M0 turbo engine of the specified BMW 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 radiator come into play. The newly developed competition racing core of the WAGNERTUNING high-performance radiator increases the radiator volume of the OEM water cooler by a total of 117 %. 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 radiator) for its heat exchange.

Furthermore, using an increased amount of cooling water, the entire system thermic can be kept at a lower level over a more extended period. All WAGNERTUNING radiators are equipped with 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).

Dimensions OEM radiator:
576 mm x 495 mm x 27 mm
V = 7,70 Liter
A = 2851 cm²

Dimensions WT radiator:
524 mm x 468 mm x 68 mm
V = 16,70 Liter
A = 2454 cm²