Genuine OEM Audi Secondary Air Injection Kombi Valve, part number 07C131101M. This valve is a key component of the secondary air injection system, responsible for controlling airflow to help reduce harmful exhaust emissions during cold starts. It is typically located on the left side of the engine bay, integrated into the emissions control plumbing. Weighing approximately 0.23 kg and measuring 90mm long, 60mm wide, and 68mm high, this valve is engineered for precise operation. Opting for a genuine OEM Kombi valve ensures accurate air metering, reliable sealing, and correct electronic integration, which is vital for maintaining emissions compliance and optimal engine performance.