Wagner Tuning Competition Additional Water Cooler Kit for Audi RS3 8Y – 132% more cooling volume Prepare your Audi RS3 8Y for maximum performance! The Wagner Tuning Competition Additional Water Cooler Kit (side water coolers) is the ultimate upgrade to maximize the cooling performance of your 2.5L TFSI engine. The dramatic 132% increase in radiator volume ensures thermal stability under extreme conditions, such as on the racetrack, and optimizes power output. Why this water cooler kit is a must-have for the Audi RS3 8Y: Massive volume expansion: Increases the radiator volume of the side water coolers by an astonishing +132% compared to the OEM coolers (V = 4.27 liters vs. OEM 1.84 liters). Maximum cooling efficiency: All-aluminum construction with excellent thermal conductivity for significantly improved cooling efficiency under all load conditions. Optimal fit: Direct replacement for the standard water coolers by maximizing the use of available installation space (plug & play). For extreme use: Especially suitable for vehicles with performance modifications and racetrack use to prevent power loss due to overheating. Complete kit: Includes coolers for the driver and passenger sides as well as all necessary mounts. Technical details & dimensions (Wagner Tuning vs. OEM) Our side-mounted all-aluminum water coolers are designed to push the thermal limits of your engine. OEM Auxiliary Water Cooler (Standard) Core Dimensions: 200 × 230 × 44 mm Volume (V): 1.84 liters Cooling Surface Area (A): 460 cm² Wagner Tuning Competition Auxiliary Water Cooler Core Dimensions: 205 × 242 × 86 mm Volume (V): 4.27 liters (+132%) Cooling Surface Area (A): 496 cm² (+8%) Improved cooling efficiency: This significant increase in volume ensures that cooling performance remains constant even at high boost pressure and under extreme driving conditions. Vehicle compatibility (Audi RS3 8Y) The side engine water cooler upgrade is plug & play compatible with: Audi RS3 8Y 2.5 TFSI (from 2021) Part number: 400001026 Kit comes with: 1x Side water cooler (driver's side) 1x Side water cooler (passenger side) 1x Set of brackets and mounting material Order now and take the thermal stability of your Audi RS3 8Y to a new level!