Someone also recently posted the part numbers for in line vacuum filter designed to keep oil (from leaky diaphragms) from conatminating the system. Also a good indicator of which engine vacuum device is failing.
'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.