What are they?
(A-C starting top, going clockwise)
A- Cam/distributor bracket "Flange mounting" 928 105 136 04 - "Pulleys, Bearings and Sprockets"
B- It's the adaptor that holds the Air Reg Valve on later year Euro's. 928 104 061 01 - "Heavy Metal Brackets"
C-Auxillary Air Regulator 930 606 102 00 - "Diaphragms and Valves"