I was working on my car tonight and removed the large duct that connects to the throttle body. When I did that a vacuum tube toward the bottom snapped. I searched realoem.com but could not locate the part as photographed. Does anyone know what this tube is for or part number?

David'06 BMW X5 4.8is Sapphire Black/Black mfg 10/2005 58k
'01 BMW 540i Sport Jet Black/Black mfg 11/2000 90k
'00 Jeep Wrangler Sport White/Tan cloth 82k
'06 BMW Z3 Rider Green/Tan Seat (daughters push car)