CSF Mercedes Benz E63 / CLS 63 M157 High Performance All Aluminum Auxiliary Radiators

When you're looking to keep your Mercedes-Benz AMG's engine running cool, especially under demanding conditions, these high-performance auxiliary radiators from CSF are a solid option. What you get in this package is a single, all-aluminum auxiliary radiator, complete with CNC machined mounting brackets and a detachable rock guard. These radiators are crucial because they don't just help keep your engine's coolant temperatures in check; they also serve as the heat exchange medium for your turbocharger's air-to-water charge-air coolers, directly lowering intake air temperatures (IATs). This means your engine can breathe cooler, denser air, which is key for maintaining optimal performance and preventing heat soak.

CSF has really stepped up the game here compared to the stock units. Instead of the OEM's single-row, 42mm core, this radiator features a 2-row, 68mm core utilizing CSF's exclusive B-tube technology. This significantly increases the radiator's capacity and surface area for heat dissipation. The fins are also taller and multi-louvered to maximize contact with the airflow. The entire unit is TIG-welded from aluminum and individually pressure tested to ensure there are no leaks. It's designed as a true drop-in fit, meaning installation should be straightforward without needing any modifications to your vehicle. CSF even includes a rock guard to help protect the core from road debris, something the factory radiators lack.

CSF recommends replacing both the left and right auxiliary radiators if your vehicle came with two from the factory, and for the absolute best cooling performance, they suggest pairing these with their front mount heat exchanger (part #8197). This setup is designed to keep temperatures in optimal ranges for longer periods.