0+ (Unillustrated Parts)  
1+ Headrest adjuster  
2+ Headrest stem guide  
3+ Lumbar support  
4+ Recline motor  
5+ Potentiometer  
6+ Gearbox  
7+ Flexi drive  
8+ Recline mechanism handle  
9+ Plug  
10+ Lumbar adjust handle  
11+ Plug  

The part numbers in the assembly image below relate to the product number in the table. Clicking on the part number will open up the relevant part details.