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The 2.0L M 133 turbo engine of these AMG models is equipped with an indirect charge air cooling circuit, which relies on its own cooling water circuit. By lowering the cooling water temperature, the performance of the charge air is directly improved. This is where the Wagner Tuning Upgrade water cooler comes in. Our newly developed competition racing mesh increases the radiator volume by an impressive 79%. The ratio between the inner and outer cooling surface maximizes heat transfer and allows sufficient airflow for adjacent components such as the engine water cooler.
The increased cooling water volume stabilizes system thermals over a longer period of time, improving the performance and reliability of your vehicle. Each Wagner Tuning water cooler is equipped with a thermally conductive anti-corrosion coating that ensures a long-term cooling effect. Installation is effortless with our installation instructions and is virtually plug & play.
With parts certificate for your safety!
Prepare to dominate the roads and take your driving experience to a new level.
The Wagner Tuning Competition water cooler for the AMG A 45, CLA 45 and GLA 45:
Mercedes Benz W176 A 45 AMG 265-280KW/360-381PS (2013-2018)
Mercedes Benz C117 CLA 45 AMG 265-280KW/360-381PS (2013-2018)
Mercedes Benz X156 GLA 45 AMG 265-280KW/360-381PS (2014-2019)
OEM front radiator dimensions:
640 mm x 390 mm x 16 mm
V = 3.99 liters
A = 2496 cm2
Wagner Tuning front radiator dimensions:
616 mm x 362 mm x 32 mm
V = 7.14 liters
A = 2230 cm2
Part number 400001005
Type of warranty: manufacturer's warranty.
Warranty period: 24 months.
The manufacturer's warranty means that in the event of a defect or malfunction, the product will be repaired or replaced by an authorized service center. In most cases, proof of purchase (receipt or invoice) is required.
To submit a warranty claim, please contact our store via the warranty claim form. The product must be sent back to us at your own expense. If the claim is approved, we will refund the shipping costs upon presentation of proof of payment.
If you have any questions regarding the warranty conditions or the status of your claim, please contact our customer service department.






