I developed a model of an air duct directed to the brake disc. It is attached to the standard bolt of the brake hose bracket.Designed for a corrugated pipe with a diameter of 51 mm.It is recommended to print from heat-resistant filament and additionally treat the part with heat-reflective tape. The model may fit similar models on the MQB platform, I don’t know exactly which ones.The project contains a stl file for the right side, but you can easily mirror the model for the left side.