Wagner Tuning Side Radiator for BMW F80-82-83 M3 / M4
The 3.0-liter S55B30 turbo engine in the BMW M3 / M4 models features an indirect charge air cooling circuit. This means that the charge air is not cooled (as usual) by ambient air, but rather by a separate cooling water circuit. Consequently, a reduction in the cooling water temperature directly translates into an improvement in charge air cooling performance. The newly developed racing mesh of the WAGNER TUNING high-performance radiator increases the volume of the standard radiator by 89% at the front and 94% at the side. The ratio of internal to external cooling surface area used maximizes heat transfer while simultaneously allowing adjacent components (such as the engine radiator behind it) sufficient airflow for heat exchange. Furthermore, the increased amount of cooling water allows the entire thermal system to be kept at a lower temperature for a longer period of time.
All WAGNER TUNING water coolers are equipped with a thermally conductive, anti-corrosion coating to ensure a permanent cooling effect. Installation of the system is also simple and plug & play. play with the help of our installation instructions.
OEM water cooler dimensions (side):
250 mm x 165 mm x 40 mm
V = 1.65 liters
A = 412.5 cm²
WT water cooler dimensions (side):
252 mm x 188 mm x 68 mm
V = 3.2 liters (+ 94%)
A = 473.8 cm² (+ 14.9%)
Scope of delivery:
– 1x side water cooler (low temperature circuit)
– 1x carbon air duct for the side water cooler
– 1x mounting material
– 1x assembly instructions





