In my 230SL parts book, Group 15:
Main bracket: 129 150 01 73
(from man. engine x0-011122)
(from auto engine x2-003177)
Small spark plug bracket for main bracket: 000 159 01 40
Small vacuum line bracket for main bracket: 001 988 22 78
(listed for Left Hand Drive only)
It does not show brackets for tach cable or temp gage capillary tube.
Rodd
Powell, Ohio, USA
1966 230SL, Euro, Auto, Leather, both tops
1994 E420