This is High-Performance Intercooler for Audi C8 RS6/RS7 (Custom Thermal Dispersion Black Finish).
CSF?s high-performance intercoolers help to keep charge temperatures consistently lower than the factory intercooler. This is because your factory intercooler was designed for standard power levels and expected type of use, as soon as you go outside of the factory power levels and expected type of use, your factory intercooler will begin to struggle. As well as this, as your intercooler goes through its life the core will deteriorate externally as well as fill with contaminates internally which results in a reduction in its performance.