I don't recall the size. I took a connector with me and bought some that was a shade smaller in ID than the connector to compensate for stretch and age. A tight fit on the vacuum hard lines and actuators, but a tight seal.

__________________
Mike Tangas
'73 280SEL 4.5 (9/72)- RIP
Only 8,173 units built from 5/71 thru 11/72

'02 CLK320 Cabriolet - wifey's mid-life crisis

2012 VW Jetta Sportwagon TDI...at least its a diesel

Non illegitemae carborundum.