Chosen Vehicle:

No Chosen Vehicle

Wagner Audi B9 OEM IC F5 Radiator Kit (RS4 & RS5)


  • £1,070.00
    exc. VAT £891.67


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 cooling medium (as usual), but made with its own cooling water circuit. A reduction of the temperature of the cooling water is directly equated with an improved cooling performance of the charged air. This is exactly where the advantages of the WAGNERTUNING upgrade water cooler comes into play.

The new developed competition racing core of the WAGNERTUNING high performance water coolers increase 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 and allows at the same time enough air flow for the surrounding components (for example the engine water cooler) for its own heat exchange. The water coolers 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 (installation instructions included).



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

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


Compatibility (Click to Expand)


  • B9   (2017 — Present)
    • RS4/RS5 


Compatibility Check

To ensure the part(s) you have ordered fits your vehicle, we run a compatibility check prior to dispatch. We can do this either using your registration number(UK) or the last 7 digits of your VIN. Simply enter your car details prior to checkout. 



ML Performance Lifetime Warranty


Manufactured by



Part Number


Next Day UK Delivery

Get FREE Guaranteed next day UK delivery for orders over £99 (exc. VAT), excluding larger items and certain remote postal codes/areas. Same day dispatch available if your order is placed before 1pm UK Time on all in stock items!

Worldwide Shipping

We ship worldwide via DHL International, simply enter your full address at checkout to see the shipping option(s) and quote(s). Same day dispatch available if your order is placed before 1pm UK Time on all in stock items!