Hope this helps...
5) A 123 970 03 00 MOUNTING MATERIAL KIT
11) A 123 970 05 15 RAIL GUIDE TO BRACKET
23) A 123 975 00 24 SELECTOR VALVE
26) A 115 975 04 22 GUIDE TOP
29) A 115 975 05 22 GUIDE BOTTOM
32) A 115 975 00 23 FRICTION PIECE
35) A 123 975 01 37 SPRING
38) A 123 975 02 37 SPRING
41) A 115 988 04 78 CLIP
44) A 126 988 01 82 EYE UPPER PART; HEADREST IN REAR SEAT BACKREST
47) A 123 988 03 82 EYE LOWER PART;HEADREST INTO REAR SEAT BENCH BACKREST
50) A 123 988 00 91 EYE HEADREST UNLOCKING MECHANISM
59) A 115 988 00 82 EYE UPPER PART; HEADREST IN REAR SEAT CUSHION
62) A 115 988 03 82 EYE LOWER PART;HEADREST INTO REAR SEAT BENCH CUSHION
.