Irish1004

My 2002 Allroad 2.7T developed a rough idle and upon inspection I could hear an air leak. I found the culprit which was some sort of valve that had cracked where a fitting joins with a vacuum line. Any idea what part this is? It's located just behind the anchoring point (towards firewall) for the Y pipe on top of the engine. The crack is visible in the center of the attached photo.

PaperToast

common part to break from age
dealer usually has boxes of them on the shelf
Audi All Road 2.7T Engine Emissions Vacuum System - 078611933B - Vacuum Check Valve - ES#3314

Irish1004

Thanks for the quick reply! Much appreciated.