Optimize the performance of your Audi RS3 8Y with a side-mounted engine cooler upgrade.
Our Wagner Tuning side-mounted water coolers are designed to directly replace your vehicle’s stock water coolers. By maximizing the available installation space, we were able to increase the size of the water coolers by an astonishing 132%.
This significant increase, combined with the excellent thermal conductivity of our all-aluminum water coolers, provides significantly improved cooling efficiency. This is particularly suitable for vehicles subject to heavy track use or requiring additional power modifications. Our complete kit includes both driver and passenger sides and comes with additional brackets to ensure a seamless installation.
Prepare your Audi RS3 8Y for maximum performance and optimize its cooling system with our high-quality engine side radiators.
OEM Radiator Dimensions:
200 mm x 230 mm x 44 mm
V = 1.84 liters
H = 460 cm²
Wagner Tuning Water Cooler Dimensions:
205 mm x 242 mm x 86 mm
V = 4.27 liters (+132%)
H = 496 cm² (+8%)




