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Real experience
We test before we recommend.
PRODUCT DESCRIPTION
Optimize the performance of your Audi RS3 8Y with upgraded side water radiators. Our Wagner Tuning side water radiators are designed to directly replace your vehicle's standard water radiators. By fully utilizing the available installation space, we have managed to increase the size of the radiators by an impressive 132%. This significant increase, along with the excellent thermal conductivity of our all-aluminum water radiators, provides notably improved cooling efficiency. This kit is especially suitable for vehicles used intensively on the track or those requiring additional performance modifications. Our complete kit covers both the driver and passenger sides and includes additional brackets for easy installation. Prepare your Audi RS3 8Y for optimal performance and optimize its cooling system with our high-quality side water coolers. OEM water cooler dimensions: 200 mm x 230 mm x 44 mm; Volume: 1.84 liters; Surface area: 460 cm². Wagner Tuning water cooler dimensions: 205 mm x 242 mm x 86 mm; Volume: 4.27 liters (+132%); Surface area: 496 cm² (+8%). Side water cooler upgrade for the Audi RS3 8Y (part number 400001026).
Weight: 15.04 kg; Volume: 28.00 cm³/kg










WHY THETUNERLAB
We have spent years building cars, racing, and testing the exact same parts that we sell.
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We test before we recommend.
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We help you choose the right part.
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Only trusted manufacturers.
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Before and after the purchase.
+10 years
of passion for drifting
+30.000
available products
+5.000
satisfied customers
24/7
passion for motoring
Each product indicates compatible models in the product description. If you have any questions, you can contact us and we will help you choose your best option.
-If the product is in stock, the usual delivery time is 2 to 5 working days.
-If the product is out of stock, the delivery time is 7 to 15 working days.
All our products come with the manufacturer's official warranty and comply with current regulations.
Yes. We ship orders to Spain and most European countries using specialized transport agencies.
You can contact our team via WhatsApp, email, or our website's contact form.
Shipping costs depend on the type of product, its weight, dimensions, and the destination country. In most cases, the amount is calculated automatically during the checkout process before the order is finalized.
For some products, especially large items or those with special characteristics, shipping costs may require a manual review. If the amount shown does not match the actual shipping cost, we will contact you before processing the order to inform you of the final cost and request your confirmation before proceeding. We will never charge any additional fees without your authorization.