Genuine OEM Audi Charge Air Pipe, part number 7L6145955D. This pipe serves as a conduit for pressurized air within the engine's intake system, typically connecting components like the turbocharger, intercooler, or throttle body. It is a rigid pipe designed to withstand high pressures and temperatures. Using a genuine OEM charge air pipe ensures correct routing, secure connections, and material integrity, which are vital for maintaining boost pressure and engine efficiency.